Molekula
L-Glutamic acid monopotassium monohydrate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
L-Glutamic acid monopotassium monohydrate is a potassium salt of glutamic acid used as a flavor enhancer and nutritional supplement. It is a white crystalline powder with a molecular formula of C5H8KNO4·H2O and a molecular weight of 203.23 g/mol. It is stable at ambient storage conditions and has no signal word. Molekula supplies L-Glutamic acid monopotassium monohydrate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
In stock — same-day dispatch
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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500 mg — £99.70 per pack ex VAT · £119.64 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White powder |
| Identification | Conforms to reference |
| pH | 6.5 ~ 8.0 |
| Chloride (Cl-) | ≤0.2% |
| Assay | 98.5 - 101.5% |
| Lead (Pb) | ≤10ppm |
| Specific Optical Rotation[α]D20 | +22.5 ~ +24.0° |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Solubility (other solvents) | Freely soluble in water; practically insoluble in ethanol or ether |
Source: PubChem CID 23695977 (EU Food Improvement Agents)
Identification
| Property | Value |
|---|---|
| SKU | 90028664 |
| CAS Number | 6382-01-0 |
| IUPAC Name | potassium;(4S)-4-amino-5-hydroxy-5-oxopentanoate;hydrate |
| Molecular Formula | C5H8KNO4·H2O |
| Molecular Weight | 203.23 |
| Exact Mass | 203.0196 |
| SMILES | C(CC(=O)[O-])[C@@H](C(=O)O)N.O.[K+] |
| InChIKey | XIBUKSQTWSKJMQ-QTNFYWBSSA-M |
| InChI | InChI=1S/C5H9NO4.K.H2O/c6-3(5(9)10)1-2-4(7)8;;/h3H,1-2,6H2,(H,7,8)(H,9,10);;1H2/q;+1;/p-1/t3-;;/m0../s1 |
| PubChem CID | 23695977 |
| REACH Code | Y113 |
| HTS Code | 29224250 |
| Tariff Code | 2922420090 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- Glutamate, Potassium
- INS NO.622
- L-Glutamic acid, monopotassium salt
- L-Glutamic acid, monopotassium salt, monohydrate
- MONOPOTASSIUM GLUTAMATE
- Monopotassium glutamate monohydrate
- Monopotassium L-glutamate
- Monopotassium L-glutamate monohydrate
- Potassium glutamate
- Potassium glutaminate
Frequently asked questions
What is L-Glutamic acid monopotassium monohydrate used for?
It is primarily used as a flavor enhancer in food products and as a buffering agent in biochemical applications.
What is the chemical formula and molecular weight?
The formula is C5H8KNO4·H2O with a molecular weight of 203.23 g/mol.
How should L-Glutamic acid monopotassium monohydrate be stored?
It should be stored at ambient temperature, protected from moisture and heat.
What grade is available?
Available in food-grade and technical-grade forms, depending on application needs.
Can Molekula supply it in bulk?
Yes, Molekula can supply L-Glutamic acid monopotassium monohydrate in bulk quantities upon request.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and safety data sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.