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HG/T 4068-2008Wet-process crude phosphoric acid for industrial use (English PDF)

工业湿法粗磷酸[合订本 HG/T4068、4069-2008]

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Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

April 23, 2008

Implementation date

October 1, 2008

Scope

HG/T 4068-2008 is the English-translated version of 工业湿法粗磷酸[合订本 HG/T4068、4069-2008].

HG/T 4068-2008 is the Chinese standard "Wet-process crude phosphoric acid for industrial use". Its scope clause reads: This standard specifies the requirements, test methods, inspection rules, marking and labeling, as well as packaging, transport and storage of wet phosphoric acid for industrial use.

This standard is applicable to the wet phosphoric acid for industrial use produced by dihydrate process and sulfuric acid leaching. This product is mainly used for the production of purified phosphoric acid and other industrial phosphates. Its clauses include molecular formula and relative molecular mass.

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Document preview — HG/T 4068-2008

National Standard of the People's Republic of China

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

Foreword i
1 Scope
2 Normative references
3 Molecular formula and relative molecular mass
4 Requirements
5 Test method
6 Inspection rules
7 Marking and labeling
8 Packaging, transport and storage

1 Scope

This standard specifies the requirements, test methods, inspection rules, marking and labeling, as well as packaging, transport and storage of wet phosphoric acid for industrial use.

2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies.

GB/T 1250 Rules for expression and judgment of limiting values

GB/T 6678 General principles for sampling chemical products

GB/T 6680 General rules for sampling liquid chemical products

GB/T 6682-1992 Water for laboratory use - Specifications (eqv ISO 3696: 1987)

HG/T 3696.2 Inorganic chemical products - Preparations of standard solutions for chemical analysis

HG/T 3696.3 Inorganic chemical products - Preparations of reagent solutions for chemical analysis

3 Molecular formula and relative molecular mass

Molecular formula: H3PO4

Relative molecular mass: 97.99 (as per the international relative atomic mass in 2005).

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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