Home Cart Quotation About-Us
www.ChineseStandard.net
SEARCH

GB/T 1282-2013 PDF English

US$120.00 · In stock · Download in 9 seconds
GB/T 1282-2013: Chemical reagent -- Phosphoric acid
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure
Status: Valid

GB/T 1282: Historical versions

Standard IDUSDBUY PDFDeliveryStandard Title (Description)Status
GB/T 1282-2013120 Add to Cart Auto, 9 seconds. Chemical reagent -- Phosphoric acid Valid
GB/T 1282-1996359 Add to Cart 3 days Chemical reagent. Phosphoric acid Obsolete
GB 1282-1977199 Add to Cart 2 days Chemical reagents--Phosphoric acid Obsolete

Similar standards

GB/T 1396   GB/T 6684   GB/T 1270   GB/T 1281   

GB/T 1282-2013: Chemical reagent -- Phosphoric acid

---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/GBT1282-2013
NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 71.040.30 G 62 Replacing GB/T 1282-1996 Chemical reagent - Phosphoric acid (ISO 6353-2:1983, Reagents for chemical analysis - Part 2: Specifications - First series, NEQ) ISSUED ON: DECEMBER 31, 2013 IMPLEMENTED ON: AUGUST 01, 2014 Issued by: General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the People's Republic of China.

Table of Contents

Foreword ... 3 1 Scope ... 5 2 Normative references ... 5 3 Shape ... 6 4 Specification ... 6 5 Test ... 7 6 Inspection rules ... 12 7 Packaging and marks ... 12 Annex A (Informative) Pressurized ion exchange device ... 14

Foreword

This Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard replaces GB/T 1282-1996 “Chemical reagent - Phosphoric acid”. Compared with GB/T 1282-1996, main technical changes are as follows: -- modified unit of volatile acid from “mmol/100g” to “mmol/g” (see Clause 4 of this Edition, Clause 4 of Edition 1996); -- increased specification of arsenic guaranteed reagent, analytical reagent from “0.0001%” to “0.00005%”; raised chemical pure specification from “0.0005%” to “0.0001%” (see Clause 4 of this Edition, Edition 4 of Edition 1996); -- increased specification of guaranteed reagent of sodium, potassium, nickel, copper, zinc, cadmium (see Clause 4 of this Edition, Edition 4 of Edition 1996); -- added specification of analytical reagent and chemical pure of sodium, potassium, nickel, copper, zinc, cadmium, lead (see Clause 4 of this Edition); -- increased specification of chemical pure of reducing substance from “0.05%” to “0.03%” (see Clause 4 of this Edition, Edition 4 of Edition 1996); -- improved determination method for content (see 5.2 of this Edition, 5.1 of Edition 1996); -- added determination method for arsenic (see 5.8.2); -- added determination method of inductively coupled plasma atomic emission spectrometry of sodium, potassium, manganese, nickel, copper, zinc, cadmium and lead (see 5.10.2); -- improved pressurized ion exchange device (see Annex A of this Edition, Annex A of Edition 1996); -- deleted specification and determination methods for burning residue, heavy metal (see Clause 4, 5.3 and 5.12 of Edition 1996); -- deleted chemical analysis determination method for manganese (see 5.11 of Edition 1996). This Standard uses redrafting method to modify and adopt R22 "phosphoric acid" in ISO 6353-2:1983 “Reagents for Chemical Analysis -- Part 2: Chemical reagent - Phosphoric acid Warning - Some test procedures specified in this Standard may result in dangerous conditions. Users are responsible for taking appropriate safety and health measures. Molecular formula: H3PO4 Relative molecular mass: 98.00 (according to 2007 international relative atomic mass)

1 Scope

This Standard specifies shape, specification, test, inspection rules, packaging as well as marks for chemical reagent - phosphoric acid. This Standard is applicable to inspection of chemical reagent - phosphoric acid.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 601, Chemical reagent - Preparations of reference titration solutions GB/T 602, Chemical reagent - Preparations of standard solutions for impurity GB/T 603, Chemical reagent - Preparations of reagent solutions for use in test methods GB/T 605, Chemical reagent - General method for the measurement of colour GB/T 610-2008, Chemical Reagent - General Method for the Determination of Arsenic GB/T 6682, Water for laboratory use - Specifications GB/T 9723-2007, Chemical Reagent - General Rule for Flame Atomic Absorption Spectrometry Analysis GB/T 9728, Chemical reagent - General method for the determination of 5.5 Chloride Weigh 5g (3mL) of sample. Dilute to 20mL. Determine according to provisions of GB/T 9729. Solution turbidity shall not be greater than standard turbidity solution. Preparation of standard turbidity solution takes chloride (Cl) standard solution that contains following quantities. Perform same processing with sample simultaneously. Guaranteed reagent: 0.010mg; analytical reagent: 0.015mg; chemical pure: 0.025mg. 5.6 Sulfate Weigh 5g (3mL) of sample. Dilute to 50mL. Take 10mL (5mL for chemical pure). Dilute to 20mL. Add 0.5mL of hydrochloric acid solution (20%). Determine according to provisions of GB/T 9728. Solution turbidity shall not be greater than standard turbidity solution. Preparation of standard turbidity solution takes sulfate (SO4) standard solution that contains following quantities. Dilute to 20mL. Perform same processing with same volume of sample solution simultaneously. Guaranteed reagent: 0.01mg; analytical reagent: 0.03mg; chemical pure: 0.05mg. 5.7 Nitrate Weigh 5g (3mL) of sample. Dilute to 10mL. Add 1mL of sodium chloride solution (100g/L) and 1mL of indigo sodium disulphonate solution [c(C16H8N2Na2O8S2)=0.001 mol/L]. While shaking, within 10s~15s, add 10mL of sulfuric acid. Place for 10min. Blue of solution shall not be lighter than standard colorimetric solution. Preparation of standard colorimetric solution takes nitrate (NO3) standard solution that contains following quantities. Perform same processing with sample simultaneously. Guaranteed reagent: 0.015mg; analytical reagent, chemical pure: 0.025mg. 5.8 Arsenic 5.8.1 Silver diethyldithiocarbamate method (arbitration method) Weigh 4g (2.4mL) of sample. Dilute to 30mL. Inject into arsenic bottle. Determine according to provisions of 4.2 in GB/T 610-2008. Purple red of absorbent shall not be darker than standard colorimetric solution. 5.10.1.3 Preparation of test solution See Annex A for pressurized ion exchange device. Ion exchange column is loaded with strong acid cation exchange resin of which particle diameter is 0.04mm~0.08mm, and exchange capacity is 4mmol/g~5mmol/g. When exchanged, flow rate is controlled at 1.0mL/min ~ 1.5mL/min. Weigh 10g (6mL) of sample. Place in a 25mL volumetric flask. Dilute to scale. Mix well. Open exchanger rubber plug. Inject 5mL of sample into exchanger. Tighten rubber plug. Pressurize exchanger (less than 0.1MPa). Phosphoric acid matrix flows out from lower end of exchanger and is discarded. Open exchanger rubber plug. Add 5mL of water. Re-pressurize remaining sample in washing exchanger and discard it. Open exchanger rubber plug. Add 5mL of hydrochloric acid solution (10%). Tighten rubber plug. Pressurize exchanger (less than 0.1MPa). Receive eluent in a cleaned container. Add 5mL of water into exchanger. Pressurize washing exchanger. Combine washing solution and eluent, as test solution. 5.10.1.4 Determination methods 5.10.1.4.1 Sodium Take 1mL of test solution. Dilute to 250mL. Determine according to provisions of 7.2.1 in GB/T 9723-2007. Calculate result according to provisions of 7.2.3. 5.10.1.4.2 Potassium, zinc Take 1mL of test solution. Dilute to 10mL. Respectively determine according to provisions of 7.2.1 in GB/T 9723-2007. Calculate result according to provisions of 7.2.3. 5.10.1.4.3 Manganese, lead Take test solution. Respectively determine according to provisions of 7.2.1 in GB/T 9723-2007. Calculate result according to provisions of 7.2.3. 5.10.1.4.4 Nickel, copper, cadmium Take 4mL of test solution. Dilute to 10mL. Respectively determine according to provisions of 7.2.1 in GB/T 9723-2007. Calculate result according to provisions of 7.2.3. 5.10.2 Inductively coupled plasma atomic emission spectrometry 5.10.2.1 Reagent, material and apparatus In accordance with provisions of Clause 5, Clause 6 in GB/T 23942-2009. {c[Ce(SO4)2]=0.1mol/L} and 10mL of silver sulfate solution (10g/L). Add 40mL of water. Boil 15min. Cool. Dilute to original volume. Add 2 drops of 1,10- phenanthroline-ferrous iron indicator solution. Use ammonium ferrous sulfate standard titration solution {c[(NH4)2Fe(SO4)2]=0.1mol/L} to titrate till solution is red. Carry out blank test at the same time. Calculate mass fraction (w2) of reducing substance (in H3PO3) according to formula (2): Where, V1 - Value of volume of ammonium ferrous sulfate standard titration solution consumed by blank test, in milliliters (mL); V2 - Value of volume of ammonium ferrous sulfate standard titration solution, in milliliters (mL); c - Accurate value of concentration of ammonium ferrous sulfate standard titration solution, in Moore per liter (mol/L); M - Value of molar mass of phosphorous, in grams per Moore (g/mol) [M (1/2H3PO3)=41.00]; m - Value of sample mass, in grams (g).

6 Inspection rules

Perform sampling and acceptance according to provisions of HG/T 3921.

7 Packaging and marks

Perform packaging, storage and transport according to provisions of GB 15346. Provide marks, where: Packaging unit: category 4, category 5; Inner packaging pattern: NB-20, NB-21, NB-26, NB-27, NB-29; Isolation material: GC-2, GC-3; External packaging pattern: WB-1, WB-3; ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Image 1     Image 2     Image 3     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of English version of GB/T 1282-2013 be delivered?Answer: The full copy PDF of English version of GB/T 1282-2013 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 1282-2013_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 1282-2013_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+ countries

Question 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 1282-2013 -- 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 1282-2013?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 1282-2013 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 1282-2013?

A step-by-step guide to download PDF of GB/T 1282-2013_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 1282-2013".
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