Search result: GB 1903.1-2015 (GB 1903-2008 Older version)
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB 1903.1-2015 | English | 209 |
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National Food Safety Standard -- Food Nutrition Enhancer -- L-Lysine monohydrochloride
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GB 1903.1-2015
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| GB 1903-2008 | English | 319 |
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Food additive -- Acetic acid, glacial
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GB 1903-2008
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| GB 1903-1996 | English | 279 |
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Food additive. Glacial acetic acid
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GB 1903-1996
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| GB 1903-1980 | English | RFQ |
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Food additive--Acetic acid
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GB 1903-1980
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| Standard ID | GB 1903.1-2015 (GB1903.1-2015) | | Description (Translated English) | National Food Safety Standard -- Food Nutrition Enhancer -- L-Lysine monohydrochloride | | Sector / Industry | National Standard | | Classification of Chinese Standard | X42 | | Classification of International Standard | 67.220.20 | | Word Count Estimation | 10,178 | | Date of Issue | 2015-11-13 | | Date of Implementation | 2016-05-13 | | Older Standard (superseded by this standard) | GB 10794-2009 | | Regulation (derived from) | National Health and Family Planning Commission Announcement No | | Summary | This standard applies to from starch or carbohydrate raw materials, purified by fermentation of food fortification L - lysine hydrochloride. |
GB 1903.1-2015
(National food safety standards of food nutrition fortifier L- lysine monohydrochloride)
National Standards of People's Republic of China
National Food Safety Standard
Fortified Food L- lysine monohydrochloride
Issued on. 2015-11-13
2016-05-13 implementation
People's Republic of China
National Health and Family Planning Commission released
Foreword
This standard replaces GB 10794-2009 "Food Additive L- lysine monohydrochloride."
This standard compared with GB 10794-2009, the main changes are as follows.
--- Standard name was changed to "national food safety standards of food nutrition fortifier L- lysine monohydrochloride."
National Food Safety Standard
Fortified Food L- lysine monohydrochloride
1 Scope
This standard applies to the starch or sugar feedstock, obtained by fermentation of purified food fortifier L- lysine monohydrochloride.
2 chemical name, molecular formula, molecular mass and structural formula
2.1 Chemical Name
L-2,6- two-aminocaproic acid hydrochloride
Formula 2.2
C6H14N2O2 · HCl
2.3 formula
2.4 relative molecular mass
182.65 (according to 2007 international relative atomic mass)
3 Technical requirements
3.1 Sensory requirements
Sensory requirements shall comply with the requirements of Table 1.
Table 1 Sensory requirements
Project requires test methods
Color White
State crystal or crystalline powder, no visible impurities
Odour odorless
Take the right amount of sample is placed in a clean, dry white porcelain dish, self
Observe the color and state of natural light, smell the smell
3.2 Physical and Chemical Indicators
Physical and chemical indicators should be consistent with the provisions of Table 2.
Table 2. Physical and chemical indicators
Item Index Test Method
20D 20.3 ° ~ 21.5 ° Appendix Specific rotation [α] A in A.3
Content (dry matter basis), w /% 98.5 ~ 101.5 Appendix A A.4
Transmittance /% ≥ 95.0 Appendix A A.5
Loss on drying, w /% ≤ 1.0 A.6 in Appendix A
pH 5.0 ~ 6.0 in Appendix A A.7
Ash, w /% ≤ 0.2 Appendix A A.8
Lead (Pb)/(mg/kg) ≤ 5.0 GB 5009.12
Total arsenic (As)/(mg/kg) ≤ 1.0 GB 5009.11
Salt, w /% ≤ 0.02 A.9 in Appendix A
Appendix A
Testing method
A.1 General Provisions
This standard reagents and water in the absence of other specified requirements, refer to the three water analytical reagent and GB/T 6682 regulations. test
The required standard solution, impurity standard solution, preparations and products, did not indicate when the other requirements according to GB/T 601, GB/T 602,
GB/T 603 provisions prepared. Solution was used in the tests did not indicate what is formulated with solvent, it refers to an aqueous solution.
A.2 Identification Test
Confirm A.2.1 amino acids
A.2.1.1 Reagents and materials
Ninhydrin solution. 1g/L.
A.2.1.2 Test procedure
A sample was weighed 0.1g (accurate to 0.01g), dissolved in water and diluted to 100mL. Take 5mL of this solution, add 1mL ninhydrin solution
Fluid, mixed, heated in a water bath 3min.
A.2.1.3 results found
If the final solution was purple, it is recognized as an amino acid.
Confirm A.2.2 chloride
A.2.2.1 Reagents and materials
A.2.2.1.1 nitrate.
A.2.2.1.2 silver nitrate solution (0.1mol/L). Weigh 17.5g of silver nitrate, dissolved in water and diluted to 1000mL.
A.2.2.1.3 aqueous ammonia solution (10%).
A.2.2.2 Test procedure
Weigh the sample 1g (accurate to 0.1g), dissolved in water. To this solution was added silver nitrate solution (A.2.2.1.2) 5mL, and mix.
A.2.2.3 results found
If immediately generated a white emulsion precipitation, the precipitate insoluble in nitric acid, and slightly soluble in excess of ammonia, it is determined chlorides.
A.2.3 solubility
Soluble in water, very slightly soluble in ethanol, insoluble in ether.
A.3 Determination of specific optical rotation [α] 20D of
A.3.1 Reagents and materials
Hydrochloric acid solution. 6mol/L.
A.3.2 Instruments and Equipment
Automatic polarimeter.
A.3.3 Analysis step
He said drying to constant weight of the sample 5g (accurate to 0.0001g), was dissolved in hydrochloric acid solution taken at 105 ℃ ± 2 ℃, and transferred to 50mL capacity
Flask, hydrochloric acid solution to near the mark, the temperature of the solution was adjusted to 20 ℃, with a hydrochloric acid solution volume to 50mL, and mix. With the long 2dm
Optical tube measuring its optical rotation. Also recorded sample liquid temperature.
A.3.4 Calculation Results
The use of the sodium D line spectrum, 2dm optical tube when the sample was measured at 20 ℃, according to equation (A.1) sample calculation L- lysine monohydrochloride
Specific rotation.
[Α] 20D =
a1 × 50
2 × m
(A.1)
Where.
a1 --- 20 ℃ sample solution when measured optical rotation in degrees (°);
2 --- Polarimetry length in decimeters (DM);
m --- called lysine hydrochloride L- taken after drying mass in grams (g).
When using the sodium D line spectrum, 2DM offer Polarimetry, when the sample liquid temperature t ℃ measured, according to equation (A.2) and formula (A.3) calculated L- lysine hydrochloride
Specific rotation acid sample.
[Α] tD =
a2 × 50
2 × m
(A.2)
[Α] 20D = [α] tD -0.02 (20-t) (A.3)
Where.
Measured sample solution a2 --- t ℃ when optical rotation in degrees (°);
2 --- Polarimetry length in decimeters (DM);
m --- Weigh quality L- lysine hydrochloride, in units of grams (g);
0.02 --- L- lysine monohydrochloride temperature correction coefficient;
t --- measuring the temperature of the sample solution, in degrees Celsius (℃).
The results parallel arithmetic mean of the measurement results shall prevail. Twice under the same condition of independent determination results obtained absolute difference
Value should not be more than 0.3% of the arithmetic mean.
A.4 Determination of content (dry matter basis)
A.4.1 Reagents and materials
A.4.1.1 acid.
A.4.1.2 glacial acetic acid.
A.4.1.3 mercuric acetate - acetic acid solution. Weigh 6.0g mercuric acetate, acetic acid plus 100mL dissolve, and mix.
A.4.1.4 α- naphthol phenyl alcohol indicator solution. Weigh 0.2g phenyl α- naphthol methanol, add 100mL glacial acetic acid dissolve, mix and set aside.
A.4.1.5 perchloric acid standard titration solution. c (HClO4) = 0.1mol/L.
A.4.2 Analysis step
Weigh at 105 ℃ ± 2 ℃ drying to constant weight of the sample 0.2g (accurate to 0.0001g), add formic acid 3mL, dissolved, ice acetic acid
50mL, mercuric acetate - acetic acid solution 5mL, then add 10 drops of α- naphthol benzhydrol indicator solution, titration with perchloric acid standard solution titration to dissolve
VIS green, record volume consumed perchloric acid standard titration solution, while a blank titration test. If the sample is titrated with perchloric acid droplets standards
When the temperature of the solution set difference exceeds 10 ℃, should be re-calibrated concentration of perchloric acid solution, calibration temperature If a sample is titrated with perchloric acid solution when
Difference does not exceed 10 ℃, according to equation (A.4) calibration concentration perchloric acid solution.
c =
c0
1 0.0011 × (t1-t0)
(A.4)
Where.
Perchloric acid concentration of the solution during C0 --- calibrated in units of moles per liter (mol/L);
0.0011 --- expansion coefficient of acetic acid;
t1 perchloric acid solution temperature when --- titration sample, in degrees Celsius (℃);
t0 --- perchloric acid solution temperature during calibration, in degrees Celsius (℃).
A.4.3 Calculation Results
L- lysine hydrochloride (dry matter basis) of the mass fraction w1, according to equation (A.5,) Calculated.
w1 =
c1 × (V-V0) × M
m1 × 1000 ×
100% (A.5)
Where.
Concentration c1 --- perchlorate standard solution, the unit is mol per liter (mol/L);
V --- sample titration consumption of perchloric acid standard titration solution volume in milliliters (mL);
V0 --- blank titration consumed perchloric acid standard titration solution volume in milliliters (mL);
M --- L- lysine hydrochloride molar mass in grams per mole (g/mol), M
2C6H14N2O2
· HCl
÷ = 91.32é
êê
úú;
M1 --- the quality of the sample, in grams (g);
1000 --- conversion factor.
The results parallel arithmetic mean of the measurement results shall prevail. Twice under the same condition of independent determination results obtained absolute difference
Value should not exceed 0.2% of the arithmetic mean.
A.5 Determination of light transmittance
A.5.1 Instruments and Equipment
A.5.1.1 flask. 100mL.
A.5.1.2 Spectrophotometer.
A.5.2 Analysis step
Weigh 5g sample (accurate to 0.01g), dissolved in water, dilute to 100mL, shake. With a 1cm cuvette, with water as the blank,
Determination of light transmittance of the sample solution at a wavelength of 430nm, the readings are recorded.
The results parallel arithmetic mean of the measurement results shall prevail. Twice under the same condition of independent determination results obtained absolute difference
Value should not exceed 0.2% of the arithmetic mean.
A.6 Determination of loss on drying
A.6.1 Instruments and Equipment
A.6.1.1 electric oven. 105 ℃ ± 2 ℃.
A.6.1.2 analytical balance. a sense of the amount of 0.1mg.
A.6.1.3 weighing bottle. φ50mm × 30mm.
A.6.1.4 drier. with color gel desiccant.
A.6.2 Analysis step
Weigh the sample 2g (accurate to 0.0002g) to have been baked to constant mass weighing bottle, placed in 105 ℃ ± 2 ℃ electric oven baking
Dry 3h, stamp removed, placed in the dryer, cooling 30min, weighing.
A.6.3 Calculation Results
Loss on drying w2, according to equation (A.6) Calculated.
w2 =
m2-m3
m3-m0 ×
100% (A.6)
Where.
m2 --- drying bottle quality before adding the sample in grams (g);
m3 --- After drying bottle plus sample mass, in grams (g);
Mass m0 --- weighing bottle in grams (g).
The results parallel arithmetic mean of the measurement results shall prevail. Twice under the same condition of independent determination results obtained absolute difference
Value should not exceed 1% of the arithmetic mean.
A.7 pH measurement
A.7.1 Instruments and Equipment
Acidity (pH meter).
A.7.2 Analysis step
Weigh the sample 5g (accurate to 0.02g), add water to dissolve 50mL, with acidimeter solution pH.
The difference between the same two samples of the test results does not exceed 0.02pH.
A.8 Determination of ash
A.8.1 Reagents and materials
Sulfuric acid. 98%.
A.8.2 Instruments and Equipment
A.8.2.1 oven temperature. 550 ℃ ± 25 ℃.
A.8.2.2 porcelain crucible.
A.8.2.3 dryer. color gel.
A.8.3 Analysis step
To constant weight by burning crucible weighed sample 1g (accurate to 0.0001g), placed on a hot plate heated slowly, carefully charring cooling. plus
1mL ~ 2mL of sulfuric acid, heated until smoking, then moved into the high-temperature furnace, burning at 550 ℃ ± 25 ℃ 2h, until the furnace temperature dropped to 300 ℃ left
Right, take out the crucible, covered, in a desiccator, cooled to room temperature, and weighed. And then transferred to a high temperature burning furnace 1h, removed, cooled, weighed, heavy
Repeat the above operation until constant weight.
A.8.4 Calculation Results
Ash w3, according to equation (A.7) calculated as follows.
w3 =
m6-m4
m5-m4 ×
100% (A.7)
Where.
m6 --- ignition to constant weight of the crucible plus the quality of residue on ignition in grams (g);
m4 --- crucible mass in grams (g);
Crucible plus mass of the sample before m5 --- burning in grams (g).
The absolute difference between the same two samples of the test results should not exceed 1% of the arithmetic mean.
A.9 Determination of ammonium
A.9.1 Reagents and materials
A.9.1.1 magnesia.
A.9.1.2 sodium hydroxide solution. 1mol/L.
A.9.1.3 hydrochloric acid solution. take 23.41mL amount of concentrated hydrochloric acid, diluted with water to 100mL.
A.9.1.4 alkaline potassium mercuric iodide test solution. take potassium iodide 10g, add water to dissolve 10mL, slowly added a saturated aqueous solution of mercury dichloride, with the
Added with stirring to the resulting red precipitate is no longer dissolved, the hydrogenation hydroxide 30g, dissolved, coupled with a saturated solution of mercury dichloride and an aqueous solution
1mL 1mL or more, and diluted with an appropriate amount of water to make 200mL, allowed to stand to precipitate, that is, too. The supernatant was poured from the upper application when used.
A.9.1.5 ammonia-free water.
A.9.1.6 Standard chloride solution. Weigh ammonium chloride 31.5mg, set 1000mL volumetric flask, add water to dissolve and dilute to the mark,
Shake, that was the equivalent of 10μg per 1mL of ammonium (NH4) solution.
A.9.2 Instruments and Equipment
A.9.2.1 retorts. 500mL.
A.9.2.2 Nessler colorimetric tube. 50mL.
A.9.3 Analysis step
Weigh the sample 0.10g, home distillation flask, add ammonia-free distilled water 200mL, plus magnesium oxide 1g, heating distillation, distillate imported salt added
Acid solution and 1 drop of ammonia-free distilled water 50mL 5mL Nessler colorimetric tube, up to 40mL distillate, the distillation was stopped, add sodium hydroxide test
5 drops of liquid, add ammonia-free distilled water to 50mL, plus alkaline potassium mercuric iodide test solution 2mL, shake, place 15min, with the standard ammonium chloride solution
Control solution 2mL prepared as described above. Color sample solution should not be deeper than the color produced by the control solution.
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GB 1903-2008
Food additive.Acetic acid, glacial
ICS 67.220.20
X42
National Standards of People's Republic of China
Replacing GB 1903-1996
Food Additives glacial acetic acid (glacial acetic acid)
Posted 2008-06-27
2009-01-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
Chapter 5 and 8.1 of this standard are mandatory, the rest are recommended.
This standard and the Joint Expert Committee on Food Additives of FAO and the World Health Organization (FAO/WHO) of the United Nations (JECFA) special
On 1 (2006) "glacial acetic acid" (in English) the degree of consistency is not equivalent.
This standard replaces GB 1903-1996 "Food Additives glacial acetic acid (glacial acetic acid)."
This standard compared with GB 1903-1996 The main changes are as follows.
--- Increased brewing acetic acid ratio (natural degrees) project indicators and test methods (see Chapter 5 and 6.8);
--- Increasing the free acid mine project metrics and test methods (see Chapter 5 and 6.11);
--- Increased chroma project metrics and test methods (see Chapter 5 and 6.12);
--- Acetic acid content ≥99.0% by the index revised to ≥99.5%; evaporation residue from the index ≤0.01% revised to ≤0.005%; Junction
Crystal points from the index ≥14.5 ℃ modify ≥15.6 ℃ (1996 edition 3.3, Chapter 5 of this edition).
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Standardization Technical Committee branch of organic chemistry (SAC/TC63/SC2) and the National Food Additives Standardization
Committee (SAC/TC11) centralized.
This standard was drafted. Nanning Chemical Group Co., Ltd.
Participated in the drafting of this standard. Tian Guan Group, Shijiazhuang Xinyu Sanyang Industry Co., Ltd.
The main drafters of this standard. He Jie, Chen Yijiang, Johnny.
This standard was first published in 1980, in September 1996 the first amendment.
Food Additives glacial acetic acid (glacial acetic acid)
1 Scope
This standard specifies the food additive glacial acetic acid (glacial acetic acid) requirements, test methods, inspection rules and signs, packaging, transportation and storage
Memory and so on.
This standard applies to the ethanol produced by the fermentation of raw materials obtained in glacial acetic acid. The product is used as an acidity regulator in food use.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB 190-1990 dangerous goods packaging logo
Preparation of GB/T 601-2002 Chemical Reagent standard titration solution
GB/T 602-2002 Chemical Reagent preparation impurity standard solution measurement (ISO 6353-1. 1982, NEQ)
GB/T 603-2002 Chemical Reagent Test Methods Preparations with (ISO 6353-1. 1982, NEQ)
GB/T 3143-1982 Determination of color liquid chemicals (Hazen unit - platinum - cobalt color number)
GB/T 5009.74-2003 limit test of heavy metals in food additives
Determination of GB/T 5009.76-2003 arsenic in food additives
GB/T 6678-2003 General Principles for Sampling Chemical Products
GB/T 6680-2003 General rules for sampling liquid chemical products
Laboratory use - Specification and test methods (. 1987 neq ISO 3696) GB/T 6682-1992 Analysis
Determination of GB/T 7533-1993 crystallizing point of organic chemical products
Identification of GB/T 22099-2008 brewing acetate and acetic acid synthesis
3 formula and relative molecular mass
Molecular formula. CH3COOH
Molecular Weight. 60.05 (according to 2007 international relative atomic mass)
4 Appearance
Transparent colorless liquid.
5 Requirements
Glacial acetic acid food additives should comply with the technical requirements in Table 1 below.
Table 1 Technical Requirements
Item Index
Acetic acid, /% ≥ 99.5
Potassium permanganate test time/min ≤ 30
Evaporation residue, /% ≤ 0.005
Table 1 (continued)
Item Index
Crystallization point/℃ ≥ 15.6
Brewing acetic acid ratio (natural degree) /% ≥ 95
Heavy metals (Pb), /% ≤ 0.0002
Arsenic (As), /% ≤ 0.0001
Free Acid test pass
Chroma/(Platinum - Cobalt Color/Hazen units) ≤ 20
6 Test methods
6.1 Warning
Some test procedures prescribed test method can lead to dangerous situations. The operator shall take appropriate safety and health practices.
6.2 General Provisions
Unless otherwise indicated in the analysis using only recognized as analytical reagents and GB/T 6682-1992 specified in the third grade water.
The test method used in the standard titration solution, impurities measured by standard solution, preparations and products, not specified in other requirements, according
GB/T 601-2002, GB/T 602-2002, regulations preparation GB/T 603-2002 in.
6.3 Identification Test
6.3.1 Reagents
6.3.1.1 hydrochloric acid;
6.3.1.2 sulfuric acid;
6.3.1.3 ethanol (95% volume fraction);
6.3.1.4 sodium hydroxide solution. 40g/L;
6.3.1.5 ferric chloride solution. 50g/L.
6.3.2 Analysis of step
6.3.2.1 Take 1mL laboratory sample, add sodium hydroxide solution, and add ferric chloride solution that is dark red, boiled, or red occur
Brown precipitate, together with hydrochloric acid, then dissolved into a yellow solution.
6.3.2.2 Take a little laboratory samples, plus a small amount of sulfuric acid and ethanol, is heated, that unique aroma of ethyl occur.
6.4 Determination of glacial acetic acid content
6.4.1 Method summary
Phenolphthalein as indicator, titrated with sodium hydroxide standard solution titration, calculated based on the volume of consumption of acetic acid sodium hydroxide standard titration solution
Content.
6.4.2 Reagents
6.4.2.1 sodium hydroxide standard titration solution. Ba (NaOH) = 0.5mol/L;
6.4.2.2 phenolphthalein indicator solution. 10g/L.
6.4.3 Analysis of step
Weigh 1g laboratory samples, accurate to 0.0002g, placed in 250mL stoppered Erlenmeyer flask, Erlenmeyer flask equipped with a new pre-boiled and cooled
80mL of water, add 2 drops of phenolphthalein indicator solution, titration with sodium hydroxide standard titration solution until the solution was pale pink, fading to keep the 30s
end.
6.4.4 Calculation Results
1 acetic acid content, expressed in%, according to equation (1).
1 =
Vp Ba M
(1)
Where.
(6.4.2.1) value volume Vp --- sodium hydroxide standard titration solution, in milliliters (mL);
Accurate Ba --- sodium hydroxide standard titration solution concentration value in units of moles per liter (mol/L);
The molar mass values of the M --- acetic acid, in units of grams per mole (g/mol) (M = 0.06005).
Take two parallel determination results of the arithmetic average of the measurement results, the results of two parallel determination of the absolute difference is not more than 0.2%.
6.5 potassium permanganate test
6.5.1 Method summary
Reducing substance in the sample and the role of potassium permanganate, within the specified time, that appear pink solution should disappear.
6.5.2 Reagents
6.5.2.1 potassium permanganate solution. 3.1g/L.
6.5.3 Analysis of step
Volume of 2mL laboratory sample, placed with a stopper colorimetric tube. 10mL water was added dissolved in (20 ± 1) ℃ water bath was added 0.1mL
Potassium permanganate solution, shake, pink solution should disappear within 30min.
6.6 Determination of evaporation residue
6.6.1 Method summary
After the samples were evaporated to dryness in water bath, and a predetermined time at a predetermined temperature drying of the residue is weighed out in an oven.
6.6.2 Analysis of step
Weigh 50g laboratory samples, accurate to 0.01g. Placed in a pre 100mL constant weight evaporating dish, and evaporated to dryness on a water bath, placed in
Oven temperature (105 ± 2) ℃ dried 2h. A residue was determined to retain the content of heavy metals.
6.6.3 Calculation Results
Evaporation residue mass fraction of 2% to the value indicated by the formula (2).
2 =
(2)
Where.
Take two parallel determination results of the arithmetic average of the measurement results, the two parallel determination results is not more than the absolute difference between the two measured
20% of the arithmetic mean value.
6.7 Determination of crystallizing point
According to the provisions of GB/T 7533-1993 were measured.
6.8 Brewing acetic acid ratio (natural degrees) Determination
According to GB/T 22099-2008 provisions were measured.
6.9 Determination of Heavy Metal Content
6.9.1 Sample Processing
Take the residue after evaporation residue A, plus 8mL hydrochloric acid solution (1 → 100), gradually heated to completely dissolve the sample, diluted with water to
50mL. To the amount of 10mL colorimetric tube, diluted to 25mL.
6.9.2 Analysis of step
The method according to GB/T 5009.74-2003 provisions were determined taking 0.01mg/mL of lead (Pb) of the lead standard solution 2mL limit
The amount of standard solution.
Determination of Arsenic 6.10
6.10.1 sample processing
Take 1.9mL (equivalent 2g) laboratory samples, transferred to a conical flask, add 23mL water, 5mL hydrochloric acid, and 5mL potassium iodide solution
5 drops of stannous chloride solution, shake placed 10min.
6.10.2 analysis step
A mixture of 0.002mg of arsenic (As) as the standard solution of arsenic standard solution limit, according to GB/T 5009.76-2003 second method Gutzeit method
Provisions were measured.
6.11 Determination of free acid mine
6.11.1 Principle
Laboratory samples of free mineral acid (sulfuric acid, nitric acid, hydrochloric acid) is present, the hydrogen ion concentration increases, can change the color of the indicator.
6.11.2 Reagent
Thyme phenol blue paper. Take 0.1g thyme phenol blue, soluble in ethanol 50mL, add 6mL sodium hydroxide solution (4g/L), water
To 100mL. After the filter paper impregnated with this solution to dry and set aside.
6.11.3 analysis step
Capillary glass rod or stick a little laboratory sample points on the thyme phenol blue paper, paper to be dry (about 5min ~ 10min), the
Observe the test strip changes, if paper purple spots, indicating the presence of free mineral acid. Mine was not detected in the free acid is qualified.
6.12 measured chromaticity
According to the provisions of GB/T 3143-1982 were measured. Use 100mL colorimetric tube.
7 Inspection rules
7.1 Inspection classification
Inspection is divided into the factory inspection and type testing.
7.1.1 factory inspection
Table 1 in an amount of acetic acid, potassium permanganate test, evaporation residue, crystallization point, a heavy metal content factory inspection items. Batch should be
test.
7.1.2 Type inspection
Type test items in Table 1. All items. Under normal circumstances, every six months, at least once type test. The following situation
When one of the conditions, type inspection should be carried out.
a) update key production process;
b) The main raw material change;
c) Discontinued resumed production;
d) factory inspection results are quite different and the last type inspection;
Provisions e) contract.
7.2 Batch
In each class of products or product mix shift by batch.
7.3 Sampling
According to the provisions of GB/T 6678-2003 and GB/T 6680-2003 sampling. Sample amount not less than the total volume of 1L. If the barrel
Acetic acid as a solid condensate, it should be completely molten after sampling. After the sampled product mix, which take about 500mL, packed in two clean dry
Dry sealed vial, stickers, ready to label stating the product name on the label, lot number or production date, date of sampling and sampling by. Bottle for inspection
Experience, another bottle stored for future reference.
7.4 Quality Certificate
Food additives acetic acid production plant by the quality inspection department inspection in accordance with this standard, the manufacturer shall ensure that the factory's products are in line with this
Standards, each batch of products should be accompanied by a certificate of quality of a certain format, which includes. the production plant name, product name, product
Lot number or production date, health permit number, the number of this standard and compliance with this standard descriptions.
7.5 reinspection
If test results are an indicator does not meet the requirements, should be re-drums from twice the amount of sampling reinspection, the reinspection results even if only a
Indicators do not meet the requirements of this standard, then the product is substandard.
The final results of the analysis should be expressed in indicators and technical requirements magnitude consistent.
8 signs, packaging, transportation and storage
8.1 mark
Food additives on ice acetic acid containers should be securely obvious signs, including. manufacturer name, address, health permits,
Proof production license number and logo, lot number or production date, net content, shelf life, quality of products conforming to this standard and this standard number.
And on the sign clearly marked "food additives" words, there should be in line with the provisions of GB 190-1990 "corrosive" logo on the packaging container.
8.2 Packaging
Food Additives glacial acetic acid with a polyethylene pail. Barrel should be clean and dry. Glacial acetic acid per barrel net weight 20kg. According to user
The need for packaging.
8.3 Transport
Do not let the bucket upside down during transportation to prevent the sun, rain, light release and unloading.
8.4 Storage
The product should be stored in a cool place, not open dumps, not with toxic and hazardous substances and alkali mix, in order to avoid contamination.
8.5 Shelf Life
In line with the standard packaging, transport and storage conditions, from the date of production, food additives glacial acetic acid a shelf life of 12 months.
Than shelf-life re-inspection, testing results meet the requirements of this standard when the product can still be used.
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