.jpg)
DL-Methionine (Feed-Grade)
DL-2-Amino-4-(methylthio)butanoic acid
- CAS
- 59-51-8
- Potency
- ≥98.5% (Typical batch test result: 99.2%)
- Grade
- Feed Grade
- Form
- Crystalline powder / flake crystal
- Specification
- ≥98.5%
- MOQ
- 25 kg
- Synonym
- DL-2-Amino-4-(methylthio)butanoic acid
- Formula
- C5H11NO2S
- MW
- 149.21
- EINECS
- 200-432-1
- Package
- 25kg composite bag / 1000kg FIBC ton-bag
In Stock & Affordable; Money Back Guaranteed; Save Big Now
+86 571 87113616
E-mail:Product Overview & Core Technical Identity
SUNWAY supplies premium Feed-Grade DL-Methionine, a critical sulfur-containing essential amino acid for animal nutrition, fully compliant with GB/T 17810-2009 feed additive standard and relevant international feed industry specifications. Manufactured by advanced chemical synthesis & purification process, it features high assay purity, low impurity levels and good free-flowing granular properties. As the first-limiting amino acid for poultry diets, it plays an irreplaceable role in livestock protein synthesis and metabolic regulation. Every batch undergoes full-index analytical testing and 12-month sealed sample retention for complete quality traceability. Mixed consolidated shipment with feed-grade vitamins, mineral salts and other amino acid feed additives is available to reduce customers' integrated procurement and logistics expenses.
Technical Identity
Test Items |
Standards |
Test Results |
Appearance |
White or off-white crystalline powder / flake crystal |
Qualified |
Identification |
Positive characteristic chemical reaction for methionine |
Qualified |
DL-Methionine Assay (Dried Basis) |
>=98.5% |
99.2% |
Loss on Drying |
<=0.5% |
0.28% |
Chloride (as NaCl) |
<=0.2% |
<0.1% |
Heavy Metals (as Pb) |
<=20 mg/kg |
<20 mg/kg |
Arsenic (As) |
<=2 mg/kg |
<2 mg/kg |
Physiological Functions & Industry Application Logic
DL-Methionine is an indispensable sulfur-containing essential amino acid which animals cannot biosynthesize independently; it must be supplemented via feed raw materials to exert multiple metabolic and nutritional effects for livestock, poultry and aquaculture species.
1.Limiting Amino Acid & Protein Synthesis Driver It is the first-limiting amino acid for poultry, and the second/third limiting amino acid for swine diets. It provides substrate for muscle, feather and tissue protein synthesis, raises daily weight gain and improves feed conversion ratio (FCR), reduces nitrogen excretion and supports low-nitrogen environmental-friendly feed formulation.
2.Methyl Group Donor & Antioxidant Precursor Supplies methyl groups for biological methylation reactions; participates in glutathione synthesis to enhance anti-oxidative capacity, alleviate breeding transport stress and improve animal anti-disease performance.
3.Livestock Production Performance Optimizer For laying hens: improve egg shell quality, increase laying rate and extend peak laying cycle. For broilers: promote feather growth and reduce feather-pecking behavior. For swine: boost piglet growth and carcass lean meat rate. For aquatic animals: support hepatopancreas health and improve survival rate of juvenile fish and shrimp.
4.Fat Metabolism Regulator Promotes fat transportation and decomposition in liver tissue, effectively reduces risk of fatty liver syndrome for high-yield laying poultry and high-performance breeding livestock.
Key Property Reminder: DL-Methionine has slight water solubility; long-term exposure to high humidity will cause caking; keep away from strong oxidizing substances during storage and batching.
Sunway Packaging, Supply & Delivery Capacity
Standard Packaging Specifications
Small to Medium Batch: 25 kg multi-layer moisture-proof composite bag with inner PE liner, anti-hygroscopic for conventional feed mill usage
Large Volume Bulk Shipment: 1000 kg FIBC ton bag, suitable for automatic feeding systems of large-scale feed factories
Custom Service: Customized packaging specifications for long-term cooperative feed enterprise clients
Stable Spot Inventory & Production Capacity
SUNWAY maintains year-round sufficient spot stock of feed-grade DL-Methionine without seasonal stock-out risks. Independent feed-grade dedicated storage zones prevent cross-contamination with food-grade materials. Stable monthly supply capacity fully satisfies mass procurement requirements of premix factories, integrated feed mills and large-scale breeding groups.
Mixed Consolidated Shipment Support
Feed-grade DL-Methionine can be consolidated with feed-grade vitamins, lysine, threonine and other feed additive raw materials into one full container, eliminating separate delivery costs and lowering clients' overall procurement and warehouse management expenses.
Global Export Logistics & Lead Time
Main Export Regions: Western Europe, Southeast Asia, Latin America, Middle East, Oceania
Sample / Small-batch Order Lead Time: 1-3 working days after deposit confirmation
Bulk Industrial Order Lead Time: 7-10 working days after deposit payment
Authorized Industrial Application Scenarios
All usage complies with China feed additive management regulations and international feed safety specifications:
4.1 Poultry Compound Feed
Applicable Finished Goods: Broiler complete feed, layer premix, breeder poultry compound feed, duck & goose feed. Core Matching Advantages: Solve methionine deficiency of corn-soybean basal diets; improve laying performance, feather development and feed conversion efficiency. Typical recommended addition ratio: 0.10-0.25% in complete feed.
4.2 Swine Feed Products
Applicable Finished Goods: Piglet starter feed, growing-finishing swine complete feed, sow gestation-lactation premix. Core Value: Optimize lean meat growth performance, reduce feed cost per kg weight gain; match lysine for balanced amino acid profile.
4.3 Aquaculture Compound Feed
Applicable Finished Goods: Shrimp compound feed, carnivorous fish feed, juvenile aquatic animal feed. Core Value: Improve feed utilization rate, protect hepatopancreas health and increase survival rate of aquatic seedlings.
4.4 Ruminant & Pet Feed Additives
Applicable Finished Goods: Dairy cow premix, pet full-price feed and nutrition supplements. Core Value: Used together with protected amino acid formula to meet methionine nutritional requirements of ruminants; optimize fur quality for companion animals.
Full-Cycle QC & Compliance Credentials
SUNWAY Four-Stage Full Process Quality Control System
Raw Material Incoming Inspection: Every incoming DL-Methionine batch completes assay, chloride and heavy metal full testing before warehousing; unqualified batches are strictly rejected.
Intermediate Process Monitoring: Real-time temperature-humidity monitoring inside warehouse and during repacking; regular sampling inspection for appearance and anti-caking condition.
Finished Goods Full-Index Detection: Every outgoing shipment completes all test items specified in GB/T 17810-2009, covering assay, loss on drying, chloride and heavy metal-arsenic panel.
12-Month Batch Sample Retention Mechanism: Sealed representative samples of each batch are preserved for 12 months, supporting complete quality traceability for any after-sales quality verification requirements.
Complete Export Documents Provided per Shipment
Official Batch COA complying with GB/T 17810-2009 feed additive standard; MSDS / UN GHS Global Safety Data Sheet; TDS Technical Data Sheet; Feed additive manufacturer qualification document set; Non-GMO & Allergen-Free Statement; Halal / Kosher supporting documents upon request.
Global Compliance Standards
Fully complies with China GB/T 17810-2009 feed-grade DL-Methionine standard; meets global feed additive import inspection requirements for most target market countries.
Storage, Handling & Shelf Life Guidance
Standard Storage Environment
Store unopened intact packages in cool, dry and well-ventilated warehouse; recommended temperature 10-25℃, relative humidity <=65%. Strictly isolate from direct sunlight, water source and strong oxidant chemical raw materials.
Post-Opening Handling Tips
Seal bags tightly immediately after each sampling / batching operation. Please consume within 30 days after opening to avoid moisture absorption caking. For partial-used large volume packages, transfer residual material into sealed moisture-proof secondary bags.
Special Operation Reminder
Avoid prolonged exposure to high humidity air during weighing and mixing operations. Do not co-store together with strong oxidizing substances.
Valid Shelf Life
24 months under intact original sealed storage conditions; assay and impurity indicators are fully guaranteed within expiry date.
Sunway Core Competitive Advantages
Qualified Feed-Grade Stable Supply Chain Long-term direct cooperation with certified amino acid synthesis manufacturers; strict feed-grade dedicated warehouse management, stable batch-to-batch assay and impurity index consistency.
Animal Nutrition Formulation Technical Support Our animal nutrition R&D team provides free technical consultation on amino acid ratio matching for poultry, swine and aquafeed formulas; offer suggestions for addition dosage optimization under low-protein diet schemes.
Complete Standardized Export Documentation System Complete set of standardized export documents with full COA test data, satisfies customs audit and third-party laboratory re-inspection requirements for global feed importing countries.
Flexible Tiered Pricing & Diversified Order Matching Support small batch trial orders for formula verification, and favorable bulk pricing for ton-level FIBC large shipments; balance R&D trial use demand and mass production cost control.
Feed Raw Material Mixed Shipment Service DL-Methionine can be consolidated with lysine, threonine, feed vitamins and mineral premixes in one container to reduce comprehensive logistics cost for feed manufacturers.
Looking for a Reliable DL-Methionine (Feed-Grade) Supplier?
If you are seeking stable, high-purity DL-Methionine (Feed-Grade) with complete international compliance documents, Sunway (Hangzhou) Biotechnology Co., Ltd. is your reliable China partner.
Get A Quote
Please fill in your details and one of our material experts will get back to you within 24 hours.