Sichuan Tongsheng Amino acid Co., Ltd
L-Pyroglutamic acid
L-Theanine
L-Prolinamide

Products
L-Pyroglutamic acid

Product Name(产品名称): H-Pyr-OH             

CAS#: 98-79-3
Molecular Formula(分子式): C5H7NO3            

Molecular Weight(分子量): 129.13

Specification:(企业标准)

Item(检测项目)

Standard(检测标准)

Analysis data(检测结果)

Appearance(外观)

 White crystalline powder
(白色结晶性粉末)

Conforms(符合)

Specific rotation(旋光)(a)D20
(C=2,H2O)

-11º to –12º

-11.95º

Melting Point (ºC)(熔点)

158ºC to 163 ºC

162.2ºC

Chloride(C1)(氯)

Not more than 0.02%(不超过0.02%)

<0.02%

Ammonium(NH4)(铵盐)

Not more than 0.02%(不超过0.02%)

<0.02%

Sulfate(SO4)(硫酸盐)

Not more than 0.05%(不超过0.05%)

<0.02%

Heavy metals(Pb)(以铅计)

Not more than 10ppm(不超过10ppm)

<10ppm

Iron(Fe)(铁)

Not more than 20ppm(不超过20ppm)

<20ppm

Arsenic(As2O3)(砷)

Not more than 1 ppm(不超过1ppm)

<1ppm

Loss on drying(干燥失重)

Not more than 0.50%(不超过0.5%)

0.16%

Residue on ignition(灼烧残渣)

Not more than 0.2%(不超过0.2%)

0.06%

Assay(含量)

98.0-101.0%

99.99%

Conclusion(结论)

          The product conforms to the standard

Inspector:(检验员)

曾令娇  谢海

Manager:(复核员)

万兴智


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