Dichloromethane for industrial use (1)

1 Scope

This standard specifies the requirements, test methods, inspection rules, signs, packaging, transportation, storage, and safety of dichloromethane for industrial use

This standard applies to the production, inspection and sales of methylene chloride produced by the methanol hydrochlorination process

Molecular formula: CH ₂ Cl ₂

Relative molecular mass: 84.

2 Normative references

The clauses in the following documents are quoted as clauses of this standard.

GB190-1990 Dangerous Goods Packaging Mark

GB/T191-2000 Packaging, Storage and Transportation Graphical Sign

Preparation of GB/T601 Chemical Reagent Standard Titration Solution

Preparation of preparations and products used in GB/T603 chemical reagent test method (ISO 6353-1:1982, NEQ)

The expression and judgment method of GB/T1250 limit value

GB/T3143-1982 Liquid chemical product color determination method (Hazen unit-platinum-cobalt color number)

GB/T6283-1986 Determination of water content in chemical products Karl Fischer method (general method)

GB/T6324.

GB/T6678-2003 General Rules for Rice Samples of Chemical Products

GB/T6680-2003 General Rules for Sampling of Liquid Chemical Products

GB/T6682-1992 Analytical laboratory water specifications and test methods (eqv ISO 3696: 1987)

GB/T21541-2008 Determination of purity of methyl chloride products for industrial use by gas chromatography

3 requirements

3.

3.

Table 1 Technical requirements