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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