LYSINE HCL- ▸ Feed additive: Amino-acid supplement for animal feed and nutrition.
- ▸ Food fortification: Lysine enrichment of cereals and foods.
- ▸ Nutritional supplement: Soluble amino-acid ingredient.
- ▸ Cosmetic ingredient: Skin-conditioning agent.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →L-Lysine Monohydrochloride (CAS 657-27-2) is the hydrochloride salt of the essential amino acid L-lysine (C6H15ClN2O2). Its principal application is as a feed additive for animal nutrition; it is also used in food fortification and dietary supplements, and as a skin-conditioning ingredient in cosmetics.
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 211-519-9
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Frequently Asked Questions
What is L-Lysine Monohydrochloride used for?
L-Lysine Monohydrochloride (CAS 657-27-2) is the hydrochloride salt of the essential amino acid L-lysine (C6H15ClN2O2). Its principal application is as an amino-acid feed additive for animal nutrition; it is also used in food fortification, dietary supplements, and as a skin-conditioning cosmetic ingredient.
Is L-lysine hydrochloride the same as L-lysine monohydrochloride?
Yes — the two names refer to the same compound, the monohydrochloride salt of L-lysine, CAS 657-27-2. "Monohydrochloride" simply specifies a 1:1 acid-to-base salt ratio.
Is L-Lysine Monohydrochloride water soluble?
Yes. The hydrochloride salt is the freely water-soluble form of L-lysine, which is why it is the standard grade for feed premixes, food fortification, and liquid supplement systems.
What is the CAS number, formula, and HS code?
CAS 657-27-2, formula C6H15ClN2O2, HS 2922.41 (lysine and its esters; salts thereof). Supplied to USP specification; lot-specific CoA and SDS are available on request.
What bulk packaging and order quantities are available?
It is distributed as a USP-grade ingredient in bulk packaging suited to feed and food manufacturing. Submit your target volume and documentation needs through a bulk RFQ for current pricing, pack sizes, and lead time.
What is the REACH and TSCA regulatory status of L-Lysine Hydrochloride (L-Lysine HCl)?
L-Lysine Hydrochloride (L-Lysine HCl) (CAS 657-27-2) is subject to U.S. TSCA Inventory requirements; supplying it into the EU requires valid REACH registration ((EC) No 1907/2006). RawSource cannot verify a third-party supplier's registrations — buyers should require documented TSCA and REACH compliance for their jurisdiction and volume (EC 211-519-9).