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GB/T 685-2013 English PDF

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GB/T 685-2013: Chemical reagent -- Formaldehyde solution
Status: Valid

GB/T 685: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 685-2013English329 Add to Cart 3 days [Need to translate] Chemical reagent -- Formaldehyde solution Valid GB/T 685-2013
GB/T 685-1993English359 Add to Cart 3 days [Need to translate] Chemical reagents. Aqueous formalin Obsolete GB/T 685-1993

PDF similar to GB/T 685-2013


Standard similar to GB/T 685-2013

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Basic data

Standard ID GB/T 685-2013 (GB/T685-2013)
Description (Translated English) Chemical reagent -- Formaldehyde solution
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G63
Classification of International Standard 71.040.30
Word Count Estimation 14,176
Older Standard (superseded by this standard) GB/T 685-1993
Quoted Standard GB/T 601; GB/T 602; GB/T 603; GB/T 605; GB/T 611-2006; GB/T 6682; GB/T 9723-2007; GB/T 9728; GB/T 9729; GB/T 9736-2008; GB/T 9741-2008; GB 15258; GB 15346; HG/T 3921
Adopted Standard ISO 6353-3-1987, NEQ
Regulation (derived from) National Standards Bulletin 2013 No. 27
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the characteristics, specifications, testing, inspection rules, and packaging and marking chemicals formaldehyde solution. This standard applies to testing chemicals formaldehyde solution.

GB/T 685-2013: Chemical reagent -- Formaldehyde solution

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Chemical reagent. Formaldehyde solution ICS 71.040.30 G63 National Standards of People's Republic of China Replacing GB/T 685-1993 Chemical reagents formaldehyde solution (ISO 6353-3. 1987, Reagentsforchemicalanalysis- Part 3. Specifications-Secondseries, NEQ) Issued on. 2013-12-31 2014-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB/T 685-1993 "Chemicals formaldehyde solution," compared with the GB/T 685-1993, the main technical change as follows. --- Increased traits (see Chapter 3); --- Chromaticity analytical specifications increased from "15 Hazen units" to "10 Hazen units" (see Chapter 4, 1993 version 3.2); --- Acidity of the unit by the "mmol/100g" adjusted "mmol/g" (see Chapter 4, 1993 edition 3.3); --- Adjust the burning residue on ignition temperature (see 54, 1993 version 4.3.1.); --- Adjust the burning temperature before iron, lead measurement process (see 54, 1993 version 4.3.1.); --- Modify the packaging and logo (see Chapter 7, Chapter 6, 1993 edition). The standard reference method using redrafted ISO 6353-3. 1987 "Reagents for chemical analysis - Part 3. Specifications 2 Series" in R63 "Formaldehyde solution" preparation, and ISO 6353-3. 1987 is equivalent to the degree of non-uniformity. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee Chemistry Chemicals Branch (SAC/TC63/SC3) centralized. This standard was drafted. Nanjing Chemical Reagent Co., Ltd. The main drafters of this standard. Wang Hao, Liu Quanping, Wu Min. This standard replaces the standards previously issued as follows. --- GB/T 685-1965, GB/T 685-1993. Chemical reagents formaldehyde solution WARNING --- some of the test procedure specified in this standard can lead to dangerous situations, the user has the responsibility to take appropriate safety and health Measures. Exemplary formula. HCHO Molecular Weight. 30.03 (according to 2007 international relative atomic mass)

1 Scope

This standard specifies the characteristics, specifications, testing, inspection rules, logo and packaging and chemical reagents formaldehyde solution. This standard applies to testing chemical reagent formaldehyde solution.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Preparation of GB/T 601 chemical reagent standard titration solution Preparation of standard solution of GB/T 602 Determination of impurities in chemical reagents GB/T 603 chemical reagent in test methods - Preparations with GB/T 605 chemical reagent Chroma General method GB/T 611-2006 Chemical reagent - General method for determining the density Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 9723-2007 Chemicals flame atomic absorption spectrometry General GB/T 9728 General method for determination of chemical reagents sulfate GB/T 9729 General method for determination of chloride Chemicals GB/T 9736-2008 Determination of alkalinity and acidity Chemicals general method GB/T 9741-2008 Determination of residue on ignition Chemicals General method GB 15258 rules for preparation of chemical safety labels GB 15346 chemical reagent packaging and marking HG/T 3921 Chemicals sampling and acceptance rules

3 Characters

This reagent is transparent colorless liquid with a pungent odor, corrosion resistance, can be optionally mixed with water. This kit contains 8% to 14% Methanol in order to prevent polymerization, methanol content was measured according to Appendix A, you can also use other polymerization inhibitor.

4 Specification

Specifications formaldehyde solution are shown in Table 1.

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