p-Coumaric acid
Synonyms
2-Propenoic acid, 3-(4-hydroxyphenyl)-;
4-Hydroxycinnamic acid;
Hydroxycinnamic acid;
Cinnamic acid, p-hydroxy-;
4-Coumaric acid;
Category
Anionic Surfactant
> Carboxylate
>> Chain Carboxylate
>>> Phenyl Alkenyl Carboxylate
>>>> Oxyphenyl Linear Alkenylcarboxylate
Chemical Numbering System
CAS: 7400-08-0
EINECS: 231-000-0
Molecular Formula & Molecular Weight
Molecular Formula: C9H8O3
Molecular Weight: 164.16
Structure
Properties
Appearance (1), white to pale yellow solid.
Solubility soluble in water.
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 label: 
Animal Toxicity
Table 1 Animal toxicity values
|
mouse intraperitoneal LD50 |
657mg/kg[1] |
Reproductive effect[1].
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent anti-oxidizing, antibacterial, preservative abilities.
Synthesis
Obtained that p-hydroxybenzaldehyde reacts with malonic acid.
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
GB/T 5173 Surface active agents and detergents -- Determination of anionic-active matter by direct two-phase titration procedure
ISO 2271 Surface active agents -- Detergents -- Determination of anionic-active matter by manual or mechanical direct two-phase titration procedure
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 antioxidant.
2, Personal care products
Conditioning agent in personal care products. Good whitening effect.
3, Organic synthesis
Use as intermediate in organic synthesis, for example, synthesis of pharmaceuticals, electronic materials, bactericide, etc.
4, Agriculture
Bactericide, preservative in agriculture.
5, Perfume
Use as perfume.
Manufacturers
References
[1]: ChemIDplus. 7400-08-0, p-Coumaric acid
Update: 20140309(1); 20181007(2);