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Sodium lauroyl glutamate SLG 29923-31-7

Sodium lauroyl glutamate is a weak acid compound, which has a buffering effect in the pH range of 4.5~6.5. Its foam is rich, fine, soft, and comfortable when washing. It also has a good cleaning power at the pH value of 5.5. Long term use will not damage the acid-base balance of the skin. The essence of a cleansing cream mainly composed of sodium lauroyl glutamate is to thicken it through self crystallization. At a pH of around 5.5, the solubility of sodium lauroyl glutamate aqueous solution is less than 0.05g/100mL at 25 ℃, and greater than 30g/100mL at 75 ℃. Using this characteristic, dissolve at high temperature first, and then cool down to precipitate the solid. When solid precipitates, it will encapsulate or adsorb free water in the system, increasing the viscosity of the system into a paste like state.
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  • 29923-31-7

  • futurechemical

  • 29923-31-7

Sodium lauroyl glutamate Basic information
Product Name: Sodium lauroyl glutamate
CAS: 29923-31-7
MF: C17H32NNaO5
MW: 353.43
EINECS: 249-958-3
Mol File: 29923-31-7.mol
Sodium lauroyl glutamate Chemical Properties
density 1.277[at 20℃]
vapor pressure 5Pa at 20℃
pka 3.78[at 20 ℃]
form Solid
color White to off-white
Water Solubility 1.11g/L at 20℃
InChI InChI=1/C17H31NO5.Na.H/c1-2-3-4-5-6-7-8-9-10-11-15(19)18-14(17(22)23)12-13-16(20)21;;/h14H,2-13H2,1H3,(H,18,19)(H,20,21)(H,22,23);;/t14-;;/s3
InChIKey CZELQDHUMZRUIA-MFMUCMDONA-N
SMILES [C@@H](C(=O)O)(CCC(=O)O)NC(=O)CCCCCCCCCCC.[NaH] |&1:0,r|
LogP -1.33 at 20℃
EPA Substance Registry System L-Glutamic acid, N-(1-oxododecyl)-, monosodium salt (29923-31-7)

外观

(Appearance)

白色或类白色粉末,无机械杂质 white or off-white powder,  no mechanic impurities

白色粉末无机械杂质

white or off-white powder,no mechanic impurities

气味(Smell)

无特殊异味

No special odor

无特殊异味

No special odor

活性物含量(%)

(Active Substance Content)

≥95

95.71

酸值(mgKOH/g)

(Acid Value)

120~ 160

134.66

水份(%)

(Water Content)

≤5

3.74

pH 值(25℃,5%水溶液) (pH value,25℃,5% aq.

solution)

5.0~6.0

5.49

NaCl 含量(%)

(Sodium Chloride Content)

≤1

0.55

重金属(ppm)

(Heavy Metals)

≤10

≤10

砷(ppm)

(As2O3)

≤2.0

≤2.0

检验人

Identifier

王海龙

审核人 Checker

吴晓倩

结论

Conclusion

合格PASS

QA

刘猛

通用固体

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