China Food Grade N-Acetyl-Dl-Tryptophan CAS 87-32-1//L-Serine Methyl Ester Hydrochloride CAS 5680-80-8//CAS 157-06-2 D (-) -Arginine//CAS 98-79-3 L-Pyroglutamic Acid, Find details about China CAS 98-79-3, L-Pyroglutamic Acid from Food Grade N-Acetyl-Dl-Tryptophan CAS 87-32-1//L-Serine Methyl Ester Hydrochloride CAS 5680-80-8//CAS 157-06-2 D (-) -Arginine//CAS 98-79-3 L-Pyroglutamic Acid
Introduction
Product name | L-Pyroglutamic acid |
CAS.No | 98-79-3 |
MF | C5H7NO3 |
MW | 129.11 |
EINECS | 202-700-3 |
Function
L-Pyroglutamic acid is one of the main components of the skin's natural moisturizing factor, and its moisturizing ability far exceeds that of glycerin and glycol. It is non-toxic and non-irritating, and is an excellent raw material for modern skin care and hair care cosmetics. Pyroglutamic acid also has an inhibitory effect on the activity of tyrosine oxidase, thereby preventing the deposition of "melanoid" substances in the skin and has a whitening effect on the skin. It has a softening effect on keratin and can be used in nail cosmetics. In addition to its application in cosmetics, L-pyroglutamic acid can also form derivatives with other organic compounds, and has special effects in terms of surface activity, transparency and brightening effect. It can also be used as a surfactant for detergents; chemical reagents for the resolution of racemic amines; organic intermediates.
Specification
Item | Specifications | Results |
Appearance | Off-White crystalline powder | Conforms |
Specific rotation(a)D20 (C=2,H20) | -10.5°to -11.8° | -11.6° |
Melting point (°C) | 158°C to 161°C | 159.5°C |
Chloride (C1) | NMT 0.02% | 0.01% |
Ammonium (NH4) | NMT 0.02% | <0.02% |
Sulfate (SO4) | NMT 0.05% | 0.01% |
Heavy metals (Pb) | NMT 10ppm | 10ppm |
Iron(Fe) | NMT 20ppm | 8ppm |
Arsenic (As2O3) | NMT 1ppm | <1ppm |
Loss on drying | NMT 0.50% | 0.39% |
Residue on ignition | NMT 0.2% | 0.07% |
Assay | 98.0-101.0% | 99.30% |