L-Pyroglutamic acid CAS 98-79-3

Product name:L-Pyroglutamic acid
CAS：98-79-3
MF：C5H7NO3
MW：129.11
EINECS:202-700-3

Product Description

Product name:L-Pyroglutamic acid

CAS：98-79-3

MF：C5H7NO3

MW：129.11

EINECS:202-700-3

Use:

1. Used as an intermediate in organic synthesis, food additive, etc

2. Can be used as a surfactant for detergents

Specifications :

L-Pyroglutamic acid Basic information
Product Name:	L-Pyroglutamic acid
CAS:	98-79-3
MF:	C5H7NO3
MW:	129.11
EINECS:	202-700-3
L-Pyroglutamic acid Chemical Properties
Melting point	160-163 °C(lit.)
alpha	-27.5 º (c=10, 1 N NaOH)
Boiling point	239.15°C (rough estimate)
density	1.3816 (rough estimate)
refractive index	-10 ° (C=5, H2O)
storage temp.	2-8°C
solubility	H2O: 1 M at 20 °C, clear, colorless
form	Crystalline Powder
pka	3.32(at 25℃)
color	White to off-white
PH	1.7 (50g/l, H2O, 20℃)
optical activity	[α]20/D 10.5±1°, c = 5% in H2O
Water Solubility	10-15 g/100 mL (20 ºC)
Merck	148,001
BRN	82132
Stability:	Stable. Incompatible with bases, acids, strong oxidizing agents.
CAS DataBase Reference	98-79-3(CAS DataBase Reference)
NIST Chemistry Reference	Pidolic acid(98-79-3)
EPA Substance Registry System	5-Oxo-L-proline (98-79-3)

公司信息

Quality Assurance

Full-Process Quality Control: From incoming raw material inspection to in-process monitoring and final outgoing checks, every batch is inspected at each production stage against strict acceptance standards.
Third-Party Certified & Tested: Our quality management system is certified to ISO 9001, and products are regularly tested by accredited laboratories (e.g. SGS, TÜV). Test reports are available on request.
100% Batch Traceability: Each batch carries a unique lot number that links raw material records, production parameters, and test results, enabling complete traceability from factory to final delivery.
Pre-Shipment Inspection: Every order passes a final pre-shipment inspection, with inspection photos and reports shared before dispatch.

FAQ From Customers

Q1: What is the minimum order quantity?

A: There is no quantity limit for the first sample or trial order. Just tell us the actual quantity you need.
Q2: How can I confirm that the quality meets the requirements?

A: Provide your specifications, and our technical team will check them or customize them for you; we can provide TDS, MSDS, and COA, and accept third-party testing.
Q3: How do you ensure stable quality?

A: We manufacture under an ISO 9001 quality system, test every batch before release, and retain samples for 24 months for traceability.
Q4: Do you provide samples?

A: Yes — Free samples are available; freight is at buyer's expense for express delivery.