1,6-Heptadiene-3,5-dione, 1,7-bis(4-hydroxyphenyl)-
Synonyms
Bisdemethoxycurcumin;
Category
Non-ionic surfactant
> Phenol
> Keto-group Phenol
Chemical Numbering System
CASRN: 24939-16-0
EINECS: N/A
Molecular Formula & Molecular Weight
Molecular Formula: C19H16O4
Molecular Weight: 308.33
Structure
Properties
Appearance (1), orange-yellow powder.
Odor curcuma-like special odor.
Solubility slightly soluble in water. Soluble in ethanol.
Stability stable. Easily oxidized.
Risk Solid form: flammable material; irritation, irritation to skin, eye, respiratory system. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS (Rev.10) label: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent anti-oxidizing, anti-inflammatory, anti-virus, antibacterial, dispersing abilities. Sensitive to iron, copper.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
90.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents - Detergents - Testing methods
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Solid |
|
|
Heavy metals (as Pb), mg/Kg, ≤ |
20 |
|
As, mg/Kg, ≤ |
3 |
Test Methods
(1), Heavy metals (as Pb)
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30799 The test method of food detergents - Determination of heavy metals
(2), As
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30797 The test method of food detergents - Determination of total arsenic
3, Product standards
(1), Chinese standards
(1a), GB 1886.76 Food safety national standard -- Food additive -- Curcumin
4, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
(b), Used in cosmetics, should be test for harmful substances or furtherly test for microorganisms, according to local regulations and standards.
Major Uses
1, Typical applications
Use as antioxidant.
2, Personal care products
Conditioning agent, antioxidant in personal care products.
3, Food
Use as food additive (coloring agent).
Manufacturers