ARGININE- ▸ Nutritional supplement: Amino-acid ingredient for dietary supplements and fortified foods.
- ▸ Pharmaceutical raw material: Substrate in pharmaceutical manufacturing and biochemical research.
- ▸ Flavoring agent: JECFA-listed food flavoring.
- ▸ Cosmetic ingredient: Antistatic agent in personal-care formulations.
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-Arginine (CAS 74-79-3) is an alpha-amino acid (C6H14N4O2) bearing a guanidino side chain. It is used as a nutritional supplement and food ingredient, as a substrate in biochemical research and pharmaceutical manufacturing, and as a JECFA-listed flavoring agent. In cosmetics it functions as an antistatic ingredient.
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 200-811-1
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Frequently Asked Questions
What is L-arginine base used for?
L-Arginine base (CAS 74-79-3) is an alpha-amino acid (C6H14N4O2) with a guanidino side chain, used as a nutritional supplement and food ingredient, as a substrate in biochemical research and pharmaceutical manufacturing, and as a JECFA-listed flavoring agent. In cosmetics it functions as an antistatic ingredient. RawSource supplies it as a bulk raw material.
What is the difference between L-arginine base and L-arginine HCl?
The base is free L-arginine (C6H14N4O2, CAS 74-79-3); the HCl form is the monohydrochloride salt (CAS 1119-34-2), which is more water-soluble and has a different mass-per-arginine and pH profile in solution. Formulators choose between them based on solubility, pH, and dosing needs; we stock both and can quote either.
Is L-arginine an amino acid?
Yes. L-Arginine is a proteinogenic alpha-amino acid distinguished by its guanidino side chain, molecular formula C6H14N4O2, CAS 74-79-3. It is supplied as a crystalline raw material with identity confirmed on the CoA.
How is L-arginine base sold in bulk?
It is supplied as a crystalline powder in industrial packaging sized for supplement, food, and pharmaceutical-manufacturing use. Contact us for bulk pack sizes, minimum order quantity, available grade, lead time, and a current quote. CoA and SDS accompany every shipment.
What is the CAS number and HS code for L-arginine base?
L-Arginine base is CAS 74-79-3 with molecular formula C6H14N4O2. As an amino acid it is classified under HS subheading 2922.49. Full identity and specification data are provided on the CoA.
What is the REACH and TSCA regulatory status of L-Arginine (Arginine)?
L-Arginine (Arginine) (CAS 74-79-3) 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 200-811-1).