DL-Methionine Feed Grade

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DL-Methionine Feed Grade is a synthetic, racemic mixture of the amino acid methionine, consisting of equal parts D- and L-isomers. It is an essential sulfur-containing amino acid widely used as a nutritional supplement in animal feed formulations. DL-Methionine plays a critical role in protein synthesis, growth, and metabolic functions in livestock and poultry. This feed-grade quality ensures high purity (minimum 99%) and suitability for inclusion in feed blends to enhance growth performance, improve feed efficiency, and prevent methionine deficiency-related disorders.

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Category: Animal Feed Additives Tags: Amino Acid Supplement, Animal Feed Additive, DL-Methionine, Livestock nutrition, Poultry Feed

Description

Table of Contents

DL-Methionine Feed Grade

Primary Uses

Animal Nutrition

Used extensively as a feed additive for poultry, swine, ruminants, aquaculture, and pet food to supply essential sulfur amino acids.
Enhances growth rates, feed conversion ratios (FCR), and overall animal health by preventing methionine deficiency.
Supports feather development in poultry and wool growth in sheep.
Improves immune function and antioxidant status due to its role as a precursor to glutathione.
Balances amino acid profiles in feed to reduce nitrogen excretion and environmental impact.Aquaculture

Provides essential methionine for fish and shrimp diets, promoting growth, survival, and feed utilization.
Helps maintain nitrogen metabolism balance in aquatic species.Feed Manufacturing

Used in premixes and complete feed formulations to optimize nutritional value.
Compatible with various feed processing methods including pelleting and extrusion.

Secondary Uses

Pharmaceutical Industry

Occasionally used in veterinary supplements and formulations to treat methionine deficiency.
Investigated for use in human nutraceuticals and supplements as a source of methionine.Biotechnology & Research

Utilized in cell culture media and fermentation processes requiring sulfur amino acids.
Used in metabolic studies related to sulfur amino acid pathways.

KEY PRODUCT FEATURES

1. Basic Identification Attributes

Chemical Name (IUPAC): 2-Amino-4-(methylthio)butanoic acid (racemic mixture)
Common/Trade Name: DL-Methionine Feed Grade
CAS Number: 59-51-8
HS Code: 2922.49.00
Molecular Formula: C₅H₁₁NO₂S
Synonyms:
- DL-Methionine
- Methionine (racemic)
- Feed-grade methionine

2. Physical & Chemical Properties

Physical State: White crystalline powder
Odor: Slight sulfurous odor
Melting Point: 280°C (decomposes)
Solubility: Soluble in water (33 g/L at 25°C); slightly soluble in ethanol
Stability: Stable under normal storage; sensitive to strong oxidizers and alkaline conditions

3. Safety & Hazard Attributes

Hazard Class (GHS): Not classified as hazardous under normal handling
Toxicity: Low toxicity; safe in recommended doses for animal consumption
Exposure Limits: No specific occupational exposure limits established

4. Storage & Handling Attributes

Storage Conditions: Store in a cool, dry place, away from moisture and direct sunlight
Container Type: Sealed polyethylene bags, drums, or bulk containers
Shelf Life: 2–3 years if stored properly
Handling Precautions: Avoid dust formation; use PPE to prevent inhalation and skin contact

5. Regulatory & Compliance Attributes

Approved as a feed additive by major regulatory authorities (FDA, EFSA, etc.)
Compliant with feed-grade specifications and quality standards (FCC, feed additive monographs)
Registered under relevant chemical safety regulations (REACH, TSCA)

6. Environmental & Health Impact

Ecotoxicity: Low; biodegradable and non-persistent in the environment
Persistence: Decomposes readily under natural conditions
Bioaccumulation: Not expected
Carcinogenicity/Mutagenicity: Not classified

SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

PPE Required:

Dust mask or respirator (to avoid inhalation)
Safety goggles
Gloves (nitrile or latex)
Protective clothing or lab coat

Handling Guidelines:

Handle in well-ventilated areas to minimize dust exposure
Avoid generating dust clouds during transfer or mixing
Prevent contact with eyes and skin
Follow good industrial hygiene practices

Storage Measures:

Keep containers tightly sealed
Store away from moisture and incompatible substances such as strong oxidizers
Maintain dry storage conditions to prevent caking

Hygiene Practices:

Wash hands thoroughly after handling
Do not eat, drink, or smoke in handling areas
Maintain clean working environment

First Aid Measures

Inhalation: Move affected individual to fresh air; seek medical advice if respiratory irritation develops
Skin Contact: Wash skin with soap and water; seek medical attention if irritation persists
Eye Contact: Rinse eyes with plenty of water for at least 15 minutes; seek medical advice if irritation occurs
Ingestion: Rinse mouth; not expected to be toxic; seek medical attention if large amounts ingested

Firefighting Measures

Fire Hazards: Combustible material; may emit toxic fumes upon decomposition
Extinguishing Media: Use water spray, foam, dry chemical, or CO₂
Special Precautions: Avoid inhalation of smoke or fumes; wear appropriate protective equipment
Decomposition Products: Carbon monoxide, carbon dioxide, sulfur oxides