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  • Chemical Name: L-Arginine
  • CAS No.:74-79-3
  • MF:C6H14N4O2
  • MW:174.2
  • Purity:>99% or As customer requested
  • Color: White
  • Solubility:H2O: 100 mg/mL
  • Product Categories: Nutritional Supplements;L-Amino Acids;Amino Acids; APIs; Biochemical Engineering
  • Test method: HPLC


Basic information  

Product Name: L(+)-Arginine
Synonyms: Abelson tyrosine-protein kinase 2; ABL2; arginine; Arginina; Argamine; 
CAS: 74-79-3
MF: C6H14N4O2
MW: 174.2
EINECS: 200-811-1
Product Categories: Nutritional Supplements;L-Amino Acids;Amino Acids; APIs; Biochemical Engineering
Chemical Structure


Chemical Properties 

Melting point  222 °C (dec.) (lit.)
alpha  27.1 º (c=8, 6N HCl)
Boiling point  305.18°C (rough estimate)
density  1.2297 (rough estimate)
refractive index  27 ° (C=8, 6mol/L HCl)
storage temp.  2-8°C
solubility  H2O: 100 mg/mL
form  powder
pka 1.82, 8.99, 12.5(at 25℃)
color  white
PH 10.5-12.0 (25℃, 0.5M in H2O)
PH Range 10.5 – 12
optical activity [α]20/D +27°, c = 8 in 6 M HCl
Water Solubility  148.7 g/L (20 ºC)
λmax λ: 260 nm Amax: ≤0.2
λ: 280 nm Amax: ≤0.1
Sensitive  Air Sensitive
JECFA Number 1438
Merck  14,780
BRN  1725413
Stability: Stable. Incompatible with strong oxidizing agents.
Usage And Synthesis


Chemical Properties

Arginine is a diaminomonocarboxylic acid. The nonessential amino acid, arginine, is a urea cycle amino acid and a precursor for the neurotransmitter nitric oxide, which plays a role in the regulation of the brain’s system of dilation and constriction of small blood vessels. It is strongly alkaline and its water solutions absorb carbon dioxide from the air (FCC, 1996). Functionality in foods includes, but is not limited to, nutrient and dietary supplement
White crystalline powder
Uses Amino acid; nutrient.

L-Arginine Uses:

1.For biochemical research, various types of hepatic coma and viral hepatic alanine aminotransferase abnormalities.

2.Nutritional supplements; flavoring agents. Heating reaction with sugar (amino-carbonyl reaction) can obtain special flavor substances. It is an important component of amino acid infusion and comprehensive amino acid preparations.

3.Amino acid drugs.

4.Used as pharmaceutical raw materials and food additives

5.Arginine is an essential amino acid to maintain the growth and development of infants and young children. It is an intermediate metabolite of the ornithine cycle, which can promote the conversion of ammonia into urea, thereby reducing blood ammonia content. It is also the main component of sperm protein, which promotes sperm production and provides energy for sperm movement. In addition, intravenous arginine can stimulate the pituitary to release growth hormone, which can be used for pituitary function tests.

Technical Support & Resources

Information provided in the product description is from published literature. Due to the nature of scientific experimentation, your results or specific application for this product may differ. If you have questions about how this product fits your application, please contact our technical support staff.

MSDS: MSDS available.

COA: COA can be available if you send us inquiry.

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