1.01543

L-Arginine monohydrochloride

for biochemistry

• Synonym(s): α-Amino-δ-guanidino valerianic acid hydrochloride, alpha-Amino-delta-guanidino valerianic acid hydrochloride, Arg, (S)-(+)-2-Amino-5-[(aminoiminomethyl)amino]pentanoic acid monohydrochloride, (S)-(+)-Arginine hydrochloride
• Empirical Formula (Hill Notation): C₆H₁₄N₄O₂ · HCl
• CAS Number: 1119-34-2
• Molecular Weight: 210.66
• Beilstein: 3631658
• MDL number: MFCD00064550
• UNSPSC Code: 12352209
• EC Index Number: 214-275-1
• NACRES: NA.21

Properties

• vapor pressure: <1 Pa ( 20 °C)
• Quality Level: 100
• Assay: 99% dry basis (perchloric acid titration)
• form: powder
• potency: 12000 mg/kg LD₅₀, oral (Rat)
• pH: 5.7 (20 °C, 100 g/L in H₂O)
• mp: >235 °C
• solubility: 730 g/L
• density: 1.42 g/cm³ at 20 °C
• bulk density: 1250 kg/m³

Description

Application

• Improvement in Dental Health Products: Studies have shown that L-Arginine monohydrochloride enhances the bioavailability of fluoride in dental care products, promoting better oral health (Bijle et al., 2020).

Biochem/physiol Actions

Substrate of nitric oxide synthase, which is converted to citrulline and nitric oxide (NO). Induces insulin release by a nitric oxide-dependent mechanism.

Analysis Note

Assay (perchloric acid titration, calculated on dried substance): ≥ 99.0 %
Identity (IR-spectrum): passes test
Appearance: white to almost white, fine powder
Appearance of solution (1 mol/l, water): clear and colorless
Spec. rotation (α 20/D, 50 g/l, hydrochloric acid 1 mol/l, calc. on dried substance): +21.0 to +22.0
UV-Absorption(260 nm; 1 mol/l; 1 cm; water): ≤ 0.20
UV-Absorption(280 nm; 1 mol/l; 1 cm; water): ≤ 0.05
Sulfate (SO₄): ≤ 0.01 %
Heavy metals (as Pb): ≤ 0.001 %
As (Arsenic): ≤ 0.0005 %
Ca (Calcium): ≤ 0.001 %
Co (Cobalt): ≤ 0.0005 %
Fe (Iron): ≤ 0.0005 %
K (Potassium): ≤ 0.0005 %
Mg (Magnesium): ≤ 0.0005 %
Na (Sodium): ≤ 0.005 %
Zn (Zinc): ≤ 0.0005 %
NH₄ (Ammonium): ≤ 0.01 %
Foreign amino acids: ≤ 0.3 %
Other ninhydrine positive substances: ≤ 0.2 %
Loss on drying (105 °C; 3 h): ≤ 0.3 %

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable