GB/T 601-2016 PDF English
US$285.00 · In stock · Download in 9 secondsGB/T 601-2016: Chemical reagent - Preparations of reference titration solutions Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 601: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 601-2016 | English | 285 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Chemical reagent - Preparations of reference titration solutions
| Valid |
| GB/T 601-2002 | English | RFQ |
ASK
|
5 days
|
Chemical reagent -- Preparations of standard volumetric solutions
| Obsolete |
| GB/T 601-1988 | English | 839 |
Add to Cart
|
6 days
|
Chemical reagent--Preparations of standard volumetric solutions
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 601-2016
GB/T 601-2016: Chemical reagent - Preparations of reference titration solutions---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT601-2016
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.040.40; 71.040.30
G 60
Replacing GB/T 601-2002
Chemical reagent -
Preparations of reference titration solutions
Issued on. OCTOBER 13, 2016
Implemented on. MAY 1, 2017
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine of the People’s Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword... 5
1 Scope... 8
2 Normative references... 8
3 General rules... 9
4 Preparation and calibration of reference titration solutions... 11
4.1 Reference titration solution of sodium hydroxide... 11
4.2 Reference titration solution of hydrochloric acid... 12
4.3 Reference titration solution of sulfuric acid... 13
4.4 Reference titration solution of sodium carbonate... 14
4.5 Reference titration solution of potassium dichromate [c(1/6 K2Cr2O7) =
0.1mol/L]... 16
4.6 Reference titration solution of sodium thiosulfate [c(Na2S2O3) = 0.1mol/L]
... 17
4.7 Reference titration solution of bromine [c(1/2 Br2) = 0.1mol/L]... 18
4.8 Reference titration solution of potassium bromate [c(1/6 KBrO3) =
0.1mol/L]... 19
4.9 Reference titration solution of iodine [c(1/2 I2) = 0.1mol/L]... 20
4.10 Reference titration solution of potassium iodate... 21
4.11 Reference titration solution of oxalic acid (or sodium oxalate) [c(1/2
H2C2O4) = 0.1mol/L or c(1/2 Na2C2O4) = 0.1mol/L]... 23
4.12 Reference titration solution of potassium permanganate [c(1/5 KMnO4)
= 0.1mol/L]... 24
4.13 Reference titration solution of ammonium ferric sulfate (II) {c[(NH4)2
Fe(SO4)2] = 0.1mol/L}... 25
4.14 Reference titration solution of cerous sulfate (or ammonium cerous
sulfate) {c[Ce(SO4)2] = 0.1mol/L or c[2(NH4)2 SO4 · Ce(SO4)2] = 0.1mol/L}... 27
4.15 Reference titration solution of ethylene diamine tetraacetic acid... 28
4.16 Reference titration solution of zinc chloride... 30
4.17 Reference titration solution of magnesium chloride (or magnesium
sulfate) [c(MgCl2) = 0.1mol/L or c(MgSO4) = 0.1mol/L]... 32
4.18 Reference titration solution of lead nitrate {c[Pb(NO3)2] = 0.05mol/L}. 33
4.19 Reference titration solution of sodium chloride [c(NaCl) = 0.1mol/L]... 34
4.20 Reference titration solution of sodium thiocyanate (or potassium
thiocyanate, ammonium thiocyanate) [c(NaSCN) = 0.1mol/L, c(KSCN) =
0.1mol/L, c(NH4SCN) = 0.1mol/L]... 35
4.21 Reference titration solution of silver nitrate [c(AgNO3) = 0.1mol/L]... 36
4.22 Reference titration solution of mercury nitrate... 37
4.23 Reference titration solution of sodium nitrite... 38
4.24 Reference titration solution of perchloric acid [c(HClO4) = 0.1mol/L]... 41
4.25 Reference titration solution of potassium hydroxide-ethanol [c(KOH) =
0.1mol/L]... 43
4.26 Reference titration solution of hydrochloric acid-ethanol [c(HCl) =
0.5mol/L]... 44
4.27 Reference titration solution of ammonium ferric sulfate (III)
{c[NH4Fe(SO4)2] = 0.1mol/L}... 45
Appendix A (Normative) Correction value of the reference titration solution
volume at different temperatures... 47
Appendix B (Normative) Method for determining burette capacity... 49
Appendix C (Informative) Comparison of some reference titration solutions. 51
Appendix D (Informative) Assessment on expansion uncertainty of reference
titration solution concentrations... 60
Appendix E (Informative) Method for processing mercury-containing waste
liquid... 70
Appendix F (Informative) Assessment on expansion uncertainty of the glass
gauge capacity... 71
1 Scope
This Standard specifies the preparation and calibration methods of the
reference titration solutions of chemical reagents.
This Standard applies to the preparation and calibration of the reference
titration solutions for determining the purity and impurity content of chemical
reagents by titration. Other fields are also available.
2 Normative references
The following documents are essential for the application of this document.
For dated references, only the dated editions apply to this document. For
undated references, the latest editions (including all amendments) apply to
this document.
GB/T 603 Chemical reagent – Preparations of reagent solutions for use in
test methods
GB/T 606 Chemical reagent – General method for the determination of
water (Karl Fischer method)
GB/T 6379.6-2009 Accuracy (trueness and precision) of measurement
methods and results – Part 6.Use in practice of accuracy values
GB/T 6682 Water for analytical laboratory use – Specification and test
methods
GB/T 9725-2007 Chemical reagent – General rule for potentiometric
titration
JJG 130 Liquid-in-glass thermometers for working
JJG 196-2006 Working glass container
JJG 1036 Electronic balance
3 General rules
3.1 Unless otherwise specified, the grade of reagents used in this Standard
shall be above AR (including AR). The preparations and products used shall
be prepared in accordance with the provisions of GB/T 603.The experimental
water shall meet the specifications of the Grade III water in GB/T 6682.
3.2 All the concentrations of the reference titration solutions prepared
according to this Standard, except the reference titration solution of perchloric
acid, the reference titration solution of hydrochloric acid-ethanol, and the
reference titration solution of sodium nitrite, refer to the concentrations at
20°C.
3.3 When calibrating and using reference titration solutions, the titration rate
shall generally be maintained at 6mL/min to 8mL/min.
3.4 When the mass of the working reference reagent is less than or equal to
0.5g, it is weighed accurately to 0.01mg; when it is greater than 0.5g, it is
weighed accurately to 0.1mg.
3.5 The concentrations for preparing the reference titration solutions shall
be within ± 5% of the specified concentration.
4 Preparation and calibration of reference titration
solutions
4.1 Reference titration solution of sodium hydroxide
4.1.1 Preparation
WEIGH 110g of sodium hydroxide, DISSOLVE it in 100mL of carbon
dioxide-free water, SHAKE well, INJECT it into a polyethylene container, and
SEAL it until the solution is clear. According to the amount specified in Table 1,
USE a plastic tube to weigh the supernatant, DILUTE to 1,000mL with carbon
4.1.2 Calibration
According to the amount specified in Table 2, WEIGH the working reference
reagent, potassium hydrogen phthalate, dried in an electric oven at 105°C to
110°C to a constant-weight, ADD carbon dioxide-free water to dissolve, ADD
2 drops of phenolphthalein indicator solution (10g/L), TITRATE with the
prepared sodium hydroxide solution until the solution is pink, and HOLD for
30s. The blank test is performed at the same time.
4.2.2 Calibration
According to the amount specified in Table 4, WEIGH the working reference
reagent, anhydrous sodium carbonate, that has been burnt in a
high-temperature furnace at 270°C to 300°C to a constant-weight, DISSOLVE
it in 50mL of water, ADD 10 drops of bromocresol green-methyl red indicator
solution, and TITRATE with the prepared hydrochloric acid solution until the
solution turns from green to dark red, BOIL for 2min, COVER the rubber
stopper of the soda lime tube, COOL and CONTINUE titration until the
solution becomes dark red again. The blank test is performed at the same
time.
4.3 Reference titration solution of sulfuric acid
4.3.1 Preparation
According to the amount specified in Table 5, WEIGH the sulfuric acid,
INJECT it into 1,000mL of water slowly, COOL and SHAKE well.
4.3.2 Calibration
According to the amount specified in Table 6, WEIGH the working reference
reagent, anhydrous sodium carbonate, that has been burnt in a
high-temperature furnace at 270°C to 300°C to a constant-weight, DISSOLVE
it in 50mL of water, ADD 10 drops of bromocresol green-methyl red indicator
solution, and TITRATE with the prepared sulfuric acid solution until the
solution turns from green to dark red, BOIL for 2min, COVER the rubber
stopper of the soda lime tube, COOL and CONTINUE titration until the
solution becomes dark red again. The blank test is performed at the same
time.
4.4 Reference titration solution of sodium carbonate
4.4.1 Method 1
4.6 Reference titration solution of sodium thiosulfate [c(Na2S2O3) = 0.1mol/L]
4.7 Reference titration solution of bromine [c(1/2 Br2) = 0.1mol/L]
4.7.1 Preparation
WEIGH 3g of potassium bromate and 25g of potassium bromide, DISSOLVE
it in 1,000mL of water, and SHAKE well.
4.10 Reference titration solution of potassium iodate
4.10.1 Method 1
4.10.1.1 Preparation
According to the amount specified in Table 10, WEIGH the potassium iodate,
DISSOLVE it into 1,000mL of water, and SHAKE well.
4.12.2 Calibration
WEIGH 0.25g of the working reference reagent, sodium oxalate, dried in an
electric oven at 105°C to 110°C to a constant-weight, DISSOLVE it in 100mL
of sulfuric acid solution (8+92), TITRATE with the prepared potassium
permanganate solution, HEAT to about 65°C near the endpoint, CONTINUE
titration until the solution is pink, and KEEP it for 30s. The blank test is
performed at the same time.
4.14.1 Preparation
WEIGH 40g of cerium sulfate tetrahydrate (or 67g of ammonium cerous
sulfate), ADD 30mL of water and 28mL of sulfuric acid, ADD another 300mL
of water, HEAT to dissolve, ADD another 650mL of water, and SHAKE well.
4.14.2 Calibration
WEIGH 0.25g of the working reference reagent, sodium oxalate, dried in an
electric oven at 105°C to 110°C to a constant-weight, DISSOLVE it in 75mL of
water, ADD 4mL of sulfuric acid solution (20%) and 10mL of hydrochloric acid,
HEAT to 65°C to 70°C, and TITRATE with the prepared cerous sulfate (or
ammonium cerous sulfate) solution until the solution is pale yellow.
4.15 Reference titration solution of ethylene diamine tetraacetic acid
4.15.1 Method 1
4.15.1.1 Preparation
According to the amount specified in Table 13, WEIGH the ethylene diamine
tetraacetic acid, ADD 1,000mL of water, HEAT to dissolve, COOL, and
SHAKE well.
4.15.1.2 Calibration
4.15.1.2.1 Reference titration solution of ethylene diamine tetraacetic
acid [c(EDTA) = 0.1mol/L, c(EDTA) = 0.05mol/L]
According to the amount specified in Table 14, WEIGH the working reference
reagent, zinc oxide, that has been burnt in a high-temperature furnace at
800°C±50°C to a constant-weight, WET with a small amount of water, ADD
2mL of hydrochloric acid solution (20%) to dissolve, ADD 100mL of water,
USE an ammonia solution (10%) to adjust the pH of the solution to 7 to 8,
ADD 10mL of ammonia-ammonium chloride buffer solution A (pH ≈ 10) and 5
drops of chrome black T indicator solution (5g/L), and TITRATE with the
prepared ethylene diamine tetraacetic acid solution until the solution turns
from purple to pure blue. The blank test is performed at the same time.
4.15.1.2.2 Reference titration solution of ethylene diamine tetraacetic
acid [c(EDTA) = 0.02mol/L]
WEIGH 0.42g of the working reference reagent, zinc oxide, that has been
burnt in a high-temperature furnace at 800°C±50°C to a constant-weight,
WET with a small amount of water, ADD 3mL of hydrochloric acid solution
(20%) to dissolve, PIPETTE into a 250mL volumetric flask, DILUTE to the
scale, and SHAKE well. TAKE 35.00mL to 40.00mL, ADD 70mL of water,
USE an ammonia solution (10%) to adjust the pH of the solution to 7 to 8,
ADD 10mL of ammonia-ammonium chloride buffer solution A (pH ≈ 10) and 5
drops of chrome black T indicator solution (5g/L), and TITRATE with the
prepared ethylene diamine tetraacetic acid solution until the solution turns
from purple to pure blue. The blank test is performed at the same time.
The concentration of the reference titration solution of ethylene diamine
tetraacetic acid [c(EDTA)] is calculated according to Formula (22).
4.22.2 Calibration
According to the amount specified in Table 20, WEIGH the working reference
reagent, sodium chloride, that has been burnt in a high-temperature furnace
at 500°C to 600°C to a constant-weight, DISSOLVE it in 100mL of water, and
ADD 3 to 4 drops of bromophenol blue indicator solution. If the solution is
bluish violet, dropwise ADD a nitric acid solution (8+92) until the solution turns
yellow, then ADD excessive 5 to 6 drops.
4.26.2 Calibration (calibration prior to use)
4.26.2.1 Method 1
WEIGH 0.95g of the working reference reagent, anhydrous sodium carbonate,
that has been burnt in a high-temperature furnace at 270°C to 300°C to a
constant-weight, DISSOLVE it in 50mL of water, ADD 10 drops of
bromocresol green-methyl red indicator solution, and TITRATE with the
prepared hydrochloric acid-ethanol solution until the solution turns from green
to dark red, BOIL for 2min, COVER the rubber stopper of the soda lime tube,
COOL and CONTINUE titration until the solution becomes dark red again.
4.27.2 Calibration
WEIGH 35.00mL to 40.00mL of prepared ammonium ferric sulfate (III)
solution. ADD 10mL of hydrochloric acid solution (1+1). HEAT to near boiling.
Dropwise ADD a stannous chloride solution (400g/L) until the solution is
colorless. ADD excessive 1 to 2 drops, COOL, ADD 10mL of saturated
solution of mercury chloride, and SHAKE well. LET it stand for 2min to 3min.
ADD 10mL of sulfur-phosphorous mixed acid solution (SEE 4.13.1.1).
DILUTE to 100mL. ADD 1mL of sodium diphenylamine sulfonate indicator
solution (5g/L). TITRATE with the reference titration solution of potassium
dichromate [c(1/6 K2Cr2O7) = 0.1mol/L] until the solution is purple, and KEEP
it for 30s. The blank test is performed at the same time. (COLLECT the waste
liquid, and SEE Appendix E for the treatment method.)
The concentration of the reference titration solution of ammonium ferric
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of GB/T 601-2016 be delivered?Answer: The full copy PDF of English version of GB/T 601-2016 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of GB/T 601-2016_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 601-2016_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 601-2016 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. Question 5: Should I purchase the latest version GB/T 601-2016?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 601-2016 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. How to buy and download a true PDF of English version of GB/T 601-2016?A step-by-step guide to download PDF of GB/T 601-2016_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "GB/T 601-2016".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9
|