HG/T 2663-1995
Acid particle Yuanqing (English Version)
- Standard No.
- HG/T 2663-1995
- Language
- Chinese, Available in English version
- Release Date
- 1995
- Published By
- Professional Standard - Chemical Industry
- Status
- 2010-06
- Replace By
- HG/T 2663-2009
- Latest
- HG/T 2663-2009
- Scope
- This standard specifies the technical requirements, test methods, inspection rules and markings, packaging, transportation, storage, etc. of acidic particle Yuanqing (also known as: water-soluble benzene black) products. This standard is applicable to the acidic particles of Yuanqing obtained by sulfonating alcohol-soluble benzene black in concentrated sulfuric acid and then isolating and neutralizing it.
HG/T 2663-1995 history
- 2009 HG/T 2663-2009 Acid nigrosine crystals
- 1995 HG/T 2663-1995 Acid particle Yuanqing
