GB/T 631-2007 Chemical reagent - Ammonia solution
Warning: Attention is drawn to the necessity for taking precautions to safeguard the health and safety of the personnel conducting the tests against the potential hazard may arise from the test specified in this standard.
Molecular formula: NH3
Relative molecular mass: 17.03 (as per the international relative atomic mass in 2003)
1 Scope
This standard specifies the properties, specifications, tests, inspection rules, packaging and marking of chemical reagent - ammonia solution.
This standard is applicable to the inspection of chemical reagent - ammonia solution.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding corrigendum), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the referenced document applies.
GB/T 601 Chemical reagent - Preparations of reference titration solutions
GB/T 602 Chemical reagent - Preparations of standard solutions for impurity (GB/T 602-2002, ISO 6353-1: 1982, NEQ)
GB/T 603 Chemical reagent - Preparations of reagent solutions for use in test methods (GB/T 603-2002, ISO 6353-1: 1982, NEQ)
GB/T 6682 Water for analytical laboratory use - Specification and test methods (GB/T 6682-1992, neq ISO 3696: 1987)
GB/T 9723-2007 Chemical reagent - General rule for flame atomic absorption spectrometric analysis
GB/T 9727 Chemical reagent - General method for the determination of phosphate (GB/T 9727-2007, ISO 6353-1: 1982, NEQ)
GB/T 9728 Chemical reagent - General method for the determination of sulphate (GB/T 9728-2007, ISO 6353-1: 1982, NEQ)
GB/T 9729 Chemical reagent - General method for the determination of chloride (GB/T 9729-2007, ISO 6353-1: 1982, NEQ)
GB/T 9740 Chemical reagent - General method for the determination of dry residue after evaporation (GB/T 9740-1988, eqv ISO 6353-1: 1982)
GB 15258 General rules for preparation of precautionary label for chemicals
GB 15346 Chemical reagent - Packaging and marking
HG/T 3921 Chemical reagent - Regulations for sampling and acceptance
3 Properties
This reagent is an aqueous solution of ammonia, which is colorless, transparent and pungent. It absorbs carbon dioxide in the air and has a density of about 0.90 g/mL.
4 Specifications
See Table 1 for the specifications of ammonia solution.
Table 1 Specifications of ammonia solution
Foreword i
1 Scope
2 Normative references
3 Properties
4 Specifications
5 Test
6 Inspection rules
7 Packaging and marking
