Indigo
time:2014-12-18 13:39:44,count:0

Indigo
Alias
Vat Blue 1
CI 73000
2-(1,3-Dihydro-3-oxo-2H-indazol-2-ylidene)-1,2-dihydro-3H-indol-3-one
Category
Non-ionic surfactants-Amine
CAS No.
482-89-3
Molecular Formula & Molecular Weight
Molecular Formula: C16H10N2O2
Molecular Weight: 262.26
Structural Formula
Properties
Appearance: dark-blue powder.
Solubility: slightly soluble in water.
Stability: stable.
Risk: irritation, irritation to skin, eye.
Animal toxicity[1]: mouse intraperitoneal LD50: 2200mg/Kg; mouse oral LD50: > 32000mg/Kg.
Ecology: may be hazardous to environment. Water body should be given special attention.
Biodegradability: biodegradable.
Characteristics: excellent dispersing, emulsifying abilities.
Synthesis
 
Quality standards & test methods
item
physical and chemical indexes
test methods
actives*, %, ≥
95
 
*: should be marked on molecular weight.
Major Uses
Use as dye. eg: textiles, printing inks, personal care products.
Manufacturers
 
References
[1]:http://toxnet.nlm.nih.gov/: 482-89-3

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