2-Ketoglutaric acid CAS 328-50-7 AKG

α-Ketoglutaric acid is an important biological molecule, one of the important intermediates in the tricarboxylic acid cycle, a nitrogen transporter and a symbiotic substance in molecular oxidation. It plays an important role in the metabolism of microbial cells and is also an important precursor for the synthesis of various amino acids and proteins.

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Model:
328-50-7
Brand:
futurechemical
Code:
328-50-7

Product Description

2-Ketoglutaric acid Basic information
Product Name:	2-Ketoglutaric acid
CAS:	328-50-7
MF:	C5H6O5
MW:	146.1
EINECS:	206-330-3
Mol File:	328-50-7.mol
2-Ketoglutaric acid Chemical Properties
Melting point	113-115 °C
Boiling point	185.67°C (rough estimate)
bulk density	800kg/m3
density	1.2821 (rough estimate)
vapor pressure	0.01Pa at 25℃
refractive index	1.3920 (estimate)
FEMA	3891 \| 2-OXOPENTANEDIOIC ACID
storage temp.	2-8°C
solubility	H2O: soluble0.1g/mL, clear, colorless
form	Crystalline Powder
pka	2.47(at 25℃)
color	White to slightly yellow
Odor	Odorless
PH	3.09(1 mM solution);2.36(10 mM solution);1.77(100 mM solution)
Water Solubility	Soluble in water, methanol and dimethyl sulfoxide.
Merck	145,303
JECFA Number	634
BRN	1705689
InChIKey	KPGXRSRHYNQIFN-UHFFFAOYSA-N
LogP	-2.08 at 25℃
CAS DataBase Reference	328-50-7(CAS DataBase Reference)
NIST Chemistry Reference	2-Oxopentanedioic acid(328-50-7)
EPA Substance Registry System	Pentanedioic acid, 2-oxo- (328-50-7)

检验项目 Test Item	标准规定 Specification	结果 Test Result
外观 Appearance	白色至浅黄色结晶性粉末 White or off-light yellow crystals powder	Conforms
含量Assay	≥98.0%	99.7%
透过率Transmittance	≥97.0%	98.2%
铁盐 Iron(Fe)	≤20ppm	<20ppm
灼烧残渣 Residue on ignition	≤0.50%	0.10%
重金属 Heavy metal(Pb)	≤10ppm	<10ppm
砷盐 Arsenic	≤3ppm	<3ppm
干燥失重Loss on drying	≤0.5%	0.25%
熔点Melting point	113℃～117℃	114.9℃～116.2℃
纯度 Purity	≥98.0%	99.2%
结论 Conclusion	本品符合企业标准。The results conform with manfacturer’s standard.

2-Ketoglutaric acid 328-50-7 AKG C₅H₆O₅ Food additive preservation Food acidity regulation Agricultural plant growth regulation Rubber anti-aging agents Plastic plasticizers

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.