AURINTRICARBOXYLIC ACID TRISODIUM SALT
- CAS NO.：13186-45-3
- Empirical Formula: C22H11Na3O9
- Molecular Weight: 488.29
- MDL number: MFCD00044252
- EINECS: 236-140-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-04-20 16:15:45
What is AURINTRICARBOXYLIC ACID TRISODIUM SALT?
Chemical properties
bordeaux to violet or black powder
Definition
ChEBI: An organic sodium salt that is the trisodium salt of 3,3'-[(3-carboxy-4-oxocyclohexa-2,5-dien-1-ylidene)methylene]bis(6-hydroxybenzoic acid).
Preparation
Formaldehyde?(or Methanol and Sodium nitrite) and 2-Hydroxybenzoic acid concentrated sulfuric acid in the reaction.
Properties and Applications
red light purple. Soluble in water for dark red, not soluble in ethanol. In concentrated sulfuric acid for brown, dilution after precipitation. Dye aqueous solution to join sodium hydroxide as brilliant brown.
| Standard(cotton) | Ironing Fastness | Light Fastness | Fulling | Persperation Fastness | Soaping | Water | |
| Alkali | Acid | ||||||
| ISO | 2-3 | 4-5(40℃)3(100℃) | |||||
Safety information for AURINTRICARBOXYLIC ACID TRISODIUM SALT
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