China Chemical Standards

Rules of risk-based inspection of complete units—Part 3：Chlor-alkali chemical units

Issued

2026-07-02

Effective

2027-02-01

Methods for chemical analysis of tungsten concentrates—Part 16: Determination of iron, manganese, silicon, calcium and tungsten contents—X-ray fluorescence spectrometry

Issued

2026-05-25

Effective

2026-12-01

Methods for chemical analysis of magnesium and magnesium alloys—Part 21: Determination of elements content—Photoelectric direct reading atomic emission spectrometric method

Issued

2026-05-25

Effective

2026-12-01

Chemical analysis methods and determination of physical performance of alumina—Part 22: Sampling and preparation of test samples

Issued

2026-05-25

Effective

2026-12-01

Sodium hydroxide for chemical fiber use

Issued

2026-05-25

Effective

2026-12-01

Designation and chemical composition of wrought magnesium and magnesium alloy

Issued

2026-05-25

Effective

2026-12-01

Waste chemicals—Determination methods for loss on drying and loss on ignition

Issued

2026-05-25

Effective

2026-12-01

Methods for chemical analysis of magnesium and magnesium alloys—Part 18：Determination of chlorine content—Silver chloride turbidimetric method

Issued

2026-05-25

Effective

2026-12-01

Methods for chemical analysis of magnesium and magnesium alloys—Part 15：Determination of zinc content

Issued

2026-05-25

Effective

2026-12-01