Arginine HCl

Product Description

Green Stone Swiss manufactures cosmetic-grade Arginine HCl (L-arginine hydrochloride) as a high-purity crystalline amino acid salt for bulk skincare and personal-care supply. The hydrochloride form is specified for water solubility and easier handling in aqueous systems compared with free-base arginine. Direct factory lots are released under GMP-aligned QC, with batch COA, TDS, and free samples for incoming inspection and formulation trials.

Arginine HCl is the hydrochloride salt of L-arginine (CAS 1119-34-2; C₆H₁₄N₄O₂·HCl). CosIng lists the ingredient as skin conditioning. As an NMF-related amino acid, it binds water in the stratum corneum and supports hydrated, comfortable skin feel in leave-on systems. Typical concentrated aqueous solutions sit near pH 5.5–7.0, which is milder to process than alkaline free arginine. The salt is freely soluble in water and generally stable in aqueous solution.

Formulators use Arginine HCl in toners, essences, serums, creams, and after-care textures that need a defined, assay-controlled amino acid salt rather than a mixed protein hydrolysate. GSS factory-direct supply supports scale-up from sample to production with technical documentation and reliable replenishment.

Product Specification

• INCI Name: Arginine HCl
• CAS No.: 1119-34-2
• Molecular Formula: C₆H₁₄N₄O₂·HCl
• Molecular Weight: 210.66 Da
• Appearance: White to off-white crystalline powder
• Purity: Typical ≥98.5% (dry basis)
• Solubility: Freely soluble in water; stable in aqueous solution
• Suggested pH: 4.5–7.5 in finished formulas
• Storage: Store in a cool, dry place; hygroscopic, protect from moisture and light

Key Benefits & Applications

Arginine HCl is a CosIng-listed skin-conditioning amino acid salt used as an NMF-aligned hydration active in professional aqueous systems.

• Skin-conditioning amino acid salt with high water solubility versus free-base arginine
• Supports NMF-style water binding for hydrated, flexible stratum corneum feel
• Helps maintain comfort and TEWL control in water-light leave-on textures (Typical)
• Compatible with toners, essences, serums, gel-creams, creams, and after-care emulsions
• Stable in aqueous solution with broad formulation compatibility in circumneutral pH systems
• Typical use level: 0.5–5.0% in final formulation

Formulation Guidelines

Use these process notes to dissolve Arginine HCl cleanly and keep it functionally stable in cosmetic systems.

• Suggested Use Level: Typical 0.5–5.0% in final formulation
• pH Range: Suggested 4.5–7.5; confirm buffer demand versus free-base arginine
• Addition: Predissolve in the water phase; add at or below 50°C (Typical)
• Compatibility: Compatible with hyaluronates, glycerin, panthenol, and niacinamide; avoid strong oxidizing agents; protect from moisture during storage
• Combine with Sodium Hyaluronate Crosspolymer for complementary NMF amino-acid humectancy plus polymeric water binding.