1-Acetoxy-2-methylnaphthalene
Synonyms
1-Naphthalenol, 2-methyl-, 1-acetate;
1-Naphthalenol, 2-methyl-, acetate;
1-Naphthol, 2-methyl-, acetate;
2-Methyl-1-naphthol acetate;
2-Methyl-1-naphthyl acetate;
Category
Non-ionic surfactant
> Ester
>> Phenol Ester
Chemical Numbering System
CAS: 5697-02-9
EINECS: 454-690-7
Molecular Formula & Molecular Weight
Molecular Formula: C13H12O2
Molecular Weight: 200.23
Structure
Properties
Appearance (1), solid.
Solubility insoluble in water.
Stability stable. Under strong acid or strong alkali condition, easily hydrolyzed.
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 label: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent dispersing, solubilizing, lubricating abilities.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
95.0 |
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, 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 solubilizing agent.
2, Personal care products
Hair dyeing agent in personal care products.
Further information:
(1), In accordance with EU regulations (EC) No 658/2013, be included in Annex III/212.
Can be applied to oxidative hair dye products.
Maximum concentration is 2.5% in leave-on products (as triethanolamine).
In raw materials, maximum secondary amine content is 0.5%.
After mixing, under oxidative conditions the maximum concentration must not exceed 2.0%.
When both 2-Methyl-1-Naphthol and 1-Acetoxy-2-Methylnaphthalene are present in a hair dye formulation, the maximum concentration on the head of 2-Methyl-1-Naphthol should not exceed 2.0%.
Manufacturers
Update: 20140929(1); 20200419(2);