L-Methionine CAS 63-68-3
L-Methionine CAS 63-68-3L-Methionine CAS 63-68-3

L-Methionine CAS 63-68-3

L-Methionine CAS 63-68-3, L-Methionine, CAS 63-68-3

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Molecular formula: C₅H₁₁NO₂S,Molecular weight: 149.21,Appearance: White thin flaky crystals or powder, hygroscopic, slightly bitter and with a special odor.

63-68-3

C5H11NO2S

149.21

200-562-9

L-Methionine CAS 63-68-3 Information

CAS 63-68-3
Molecular formula C5H11NO2S
Molecular weight 149.21
EIENCS 200-562-9
Form Solid
Melting point 284°C
boling point 393.91°C
Density 1,34g/cm
Solubility 1 M HCl: 0.5 M at 20 °C, clear, colorless
PKA 2.13(at 25℃)
Color White
Storage temp 20-25°C

L-Methionine CAS 63-68-3

What is L-Methionine CAS 63-68-3?

Molecules and Structures

Molecular formula: C₅H₁₁NO₂S

Molecular weight: 149.21

Appearance: White thin flaky crystals or powder, hygroscopic, slightly bitter and with a special odor.

Melting and boiling points: Melting point 280-284°C (decomposes), boiling point not specified (decomposes easily at high temperatures).

Solubility

Readily soluble in water (5.6g /100mL, 30℃), dilute acids and dilute alkalis;

It is insoluble in ethanol and almost insoluble in ether.

Stability

It is stable to heat and air, but is prone to demethylation and degradation in a strong acidic environment.

Unstable in strong alkali, it decomposes more rapidly at high temperatures.

Key parameters

pH value: The pH of 1% aqueous solution is 5.6-6.1.

Specific rotation: +23.25° (c= 2,6 N HCl)

Impurity limits: Heavy metal (Pb) ≤0.001%, arsenic ≤0.0001%, iron ≤0.001%.


L-Methionine CAS 63-68-3 Use

Food industry

Nutritional supplements: Added to dairy products, baked goods (bread/cake), and condiments to enhance protein utilization (limited to 150-400mg /100g infant formula powder);

Flavor improvement: Enhance the sweetness of artificial sweeteners and improve the aftertaste (addition amount 1-10%).

Medicine and Health

Essential amino acid supplementation: Used for amino acid infusion and adjuvant treatment of liver diseases (such as fatty liver and liver cirrhosis);

Metabolic function: Participates in methylation reactions to generate antioxidant substances such as cysteine and glutathione.

Feed and Agriculture

Animal feed additives: Make up for the gap of limiting amino acids in plant protein and promote growth (aquatic/livestock feed).

Industry and daily chemicals

Cosmetics: Used as a moisturizing and repairing ingredient in shampoos and facial masks;

Tobacco: As a substitute for glycerin as a flavoring and moisture-retaining agent for tobacco shreds.


L-Methionine CAS 63-68-3 safety

Toxicity data

Acute toxicity: Intraperitoneal injection of LD₅₀=29 mmol/kg (approximately 4.3 g/kg) in rats;

Health risks: Excessive intake may cause vomiting and liver damage; Long-term exposure may cause kidney enlargement.

Operation protection

Essential equipment: Dust mask, chemical goggles, nitrile gloves (to prevent skin irritation);

Storage requirements: Keep sealed, away from light, in a cool and dry place (humidity ≤60%), and keep away from strong acids/oxidants.

Environment and Emissions

Cyanide-containing process wastewater needs to be treated by oxidation to break down cyanide (the production involves sodium cyanide)


Deshangchemical Info

  • ● Comgpany name : Shandong Deshang Chemicals Co., Ltd.
  • ● Main products : Treatments, sedimentation agents, flame retardants, catalysts, matte pigments, talcum powder, PVC additives, antifreeze agents, cellulose, cleaning agents, coconut oil, hydroxyethyl, cosmetics, matte agents, betaine, disinfectants, photosensitizers, humidifying agents, blue pigments, curing agents, potassium formate, sodium formate, cyclohexanol, preservatives, grinding aids.
  • ● Date of establishment : 2022-03-11
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  • ● Registered capital: 10000000 RMB
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