dl-pyroglutamic acid 147-87-1

Date：2022-01-12 Categories：Related Application Product

post date:

jan 11,2022

expiry date:

jan 11,2023

detailed description:

cas no. :149-87-1
quantity: 1metric tons

payment method: t/t
product name: h-dl-pyr-oh cas#: 149-87-1
synonyms: dl-pyroglutamic acid molecular formula: c5h7no3
molecular weight: 129

specification: (reference standard: aji92)
items
standard
analysis data

appearance
white crystalline powder
conforms

melting point(ºc)
160.0 to 162.0ºc
160.5ºc

chloride(c1)
not more than0.02%
0.01%

ammonium(nh4)
not more than0.02%
conforms

sulfate(so4)
not more than 0.02%
0.005%

heavy metals(pb)
not more than 10ppm
conforms

iron(fe)
not more than 10ppm
6ppm

arsenic(as2o3)
not more than 1ppm
conforms

loss on drying
not more than 0.50%
0.36%

residue on ignition
not more than0.1%
conforms

assay
98.0-101.0%

cas registry number:	149-87-1
synonyms:	;dl-2-pyrrolidone-5-carboxylic acid;dl-5-oxoproline;h-dl-pyr-oh;dl-proline, 5-oxo-;(+/-)-2-pyrrolidone-5-carboxylic acid;2-pyrrolidone-5-carboxylic acid;(+/-)-2-pyrrolidinone-5-carboxylic acid;5-oxo-dl-proline;dl-a-pyroglutamic acid;dl-glutamic acid lactam;5-oxo-l-proline;
molecular formula:	c₅h₇no₃
molecular weight:	129.114
molecular structure:
hazard symbols:	xi:irritant;
risk codes:	r36/37/38:;
safety description:	s26:; s37/39:;

Tags：DL-Pyroglutamic acid 147-87-1