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Name: (±)-Methionine CAS#59-51-8
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(±)-Methionine CAS#59-51-8

Essential Amino Acid Nutrition: (±)-Methionine is an essential sulfur-containing amino acid that supports protein synthesis and metabolic methylation, promoting growth and enhancing nutritional value.

Widely Used Feed & Food Additive: As a common nutritional fortifier, it supplies the first limiting amino acid for livestock and improves protein utilization in feed and food products.

Versatile Multi-Industry Applications: In addition to animal feed and food, it is widely used in pharmaceuticals, biochemical reagents, cosmetics and microbial culture media.

Excellent Formulation Compatibility: Its high purity, good water solubility and stable properties make it a valuable ingredient in various liquid and solid industrial and commercial formulations.

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Product Description

Product Description of (±)-Methionine CAS#59-51-8

DL-Methionine appears as white flaky crystals or a crystalline powder. It has a characteristic odor and a slightly sweet taste. Its melting point is 281°C (with decomposition). A 10% aqueous solution has a pH of 5.6–6.1. It is optically inactive and stable against heat and air, though unstable in strong acids, which can cause demethylation. It is soluble in water (3.3 g/100 mL at 25°C) as well as in dilute acid and dilute alkaline solutions; it is very sparingly soluble in ethanol and practically insoluble in diethyl ether.

Product Application of (±)-Methionine CAS#59-51-8

DL-Methionine is an important nutritional supplement widely used in the feed, food, and pharmaceutical industries. In the feed industry, it serves as an essential amino acid that enhances animal growth performance and feed utilization efficiency. In the food industry, it is used as a food additive to improve nutritional value. In the pharmaceutical sector, it is utilized in the production of medicines and nutritional supplements to meet the human body's requirements for essential amino acids.

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Product Information

Parameters

Product Name:	DL-Methionine
Synonyms:	DL-Methionine≥ 99% (Titration);(RS)-Methionine;Kochia fruit extract (10:1);DL-Met-OH;DL-METHIONINE (13C5,D8,15N);DL-METHIONINE (METHYL-13C);Kochia seed extract;DL-Methionine Vetec(TM) reagent grade, 98%
CAS:	59-51-8
MF:	C5H11NO2S
MW:	149.21
EINECS:	200-432-1
Product Categories:	Amino Acids;Amino Acids;Amino Acid Derivatives;Methionine [Met, M];feed additives;bc0001;59-51-8
Mol File:	59-51-8.mol
Melting point	284 °C (dec.)(lit.)
Boiling point	306.9±37.0 °C(Predicted)
alpha	-1~+1°(D/20℃)(c=8,HCl)
density	1.34
refractive index	1.5216 (estimate)
FEMA	3301 \| D,L-METHIONINE
storage temp.	2-8°C
solubility	1 M HCl: 0.5 M at 20 °C, clear, colorless
form	Crystals or Crystalline Powder
pka	2.13(at 25℃)
color	White
Odor	mild sulfurous acidic
Odor Type	acidic
biological source	synthetic
Optical Rotation	[α]/D, c = 5 in 5 M HCl (inactive)
Water Solubility	2.9 g/100 mL (20 ºC)
Merck	14,5975
JECFA Number	1424
BRN	636185
BCS Class	1
Stability:	Stable. Incompatible with strong oxidising agents.
Major Application	peptide synthesis
Cosmetics Ingredients Functions	ANTISTATIC HAIR CONDITIONING SKIN CONDITIONING ANTIOXIDANT
Cosmetic Ingredient Review (CIR)	DL-Methionine (59-51-8)
InChI	1S/C5H11NO2S/c1-9-3-2-4(6)5(7)8/h4H,2-3,6H2,1H3,(H,7,8)
InChIKey	FFEARJCKVFRZRR-UHFFFAOYSA-N
SMILES	CSCCC(N)C(O)=O
LogP	0.37
CAS DataBase Reference	59-51-8(CAS DataBase Reference)
NIST Chemistry Reference	Methionine(59-51-8)
EPA Substance Registry System	Methionine (59-51-8)

Safety Information

Hazard Codes	Xi
Risk Statements	33-36/37/38
Safety Statements	24/25-36-26
WGK Germany	2
RTECS	PD0457000
F	10-23
TSCA	TSCA listed
HS Code	29304090
Storage Class	11 - Combustible Solids

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