1 Scope
This standard specifies the classification, requirements, test methods, inspection rules as well as marking, packaging, transportation, storage and safety of sulphuric acid for industrial use.
This standard is applicable to sulphuric acid for industrial use prepared from pyrite, sulfur, smelting flue gas or other sulfur-containing materials.
2 Normative references
The following referenced documents are indispensable for the purpose 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 190-2009 Packing symbol of dangerous goods
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 610 Chemical reagent - General method for the determination of arsenic
GB/T 6680 General rules for sampling liquid chemical products
GB/T 6682-2008 Water for analytical laboratory use - Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
3 Product classification
Sulphuric acid for industrial use is classified into concentrated sulphuric acid and fuming sulphuric acid.
4 Requirements
Concentrated sulphuric acid shall meet the requirements of Table 1 and fuming sulphuric acid shall meet the requirements of Table 2.
Foreword i
1 Scope
2 Normative references
3 Product classification
4 Requirements
5 Test methods
5.1 General requirements
5.2 Determination of mass fraction of sulphuric acid in concentrated sulphuric acid
5.3 Determination of mass fraction of free sulfur trioxide in fuming sulphuric acid
5.4 Determination of mass fraction of ash
5.5 Determination of mass fraction of iron
5.6 Determination of mass fraction of arsenic
5.7 Determination of mass fraction of lead
5.8 Determination of mass fraction of mercury
5.9 Determination of transparency
5.10 Determination of chromaticity
6 Inspection rules
7 Marking, transportation and storage
8 Safety
Annex A (Informative) Purification of dithizone reagent
