L-Proline
Synonyms
Proline;
L-Pyrrolidine-2-carboxylic acid;
FEMA No. 3319;
Category
Zwitterionic Surfactant
> Imino Acid Type
>> Imino Acid and its Salts
>>> Aliphatic Heterocyclic Imino Acid and its Salts
Chemical Numbering System
CAS: 147-85-3
EINECS: 205-702-2
Molecular Formula & Molecular Weight
Molecular Formula: C5H9NO2; C5H9N1O2
Molecular Weight: 115.13
Structure
Properties
Appearance (1), solid.
Solubility soluble in water.
Stability stable.
Risk Solid form: flammable material; irritation, irritation to skin, eye, respiratory system. Harmful products of combustion are CO, CO2, nitrogen oxides 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 antistatic, dispersing, cleansing abilities. Non-essential amino acid. Amino acid that make up proteins.
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, Product standards
(1), Chinese standards
(1a), Chinese Pharmacopoeia (2015 Edition) Proline
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 cleansing agent.
2, Personal care products
Conditioning agent in personal care products.
3, Medicine
Use as pharmaceutical ingredient (amino acids drug). (This section is for reference only, should be implemented according to local Pharmacopoeia.)
4, Food
Use as food additive (perfume).
Manufacturers
Update: 20190428(1);