Bulk Sourcing of High-Purity L-Lactide CAS 4511-42-6: The Complete B2B Supplier Evaluation Guide
L-Lactide CAS 4511-42-6
In the rapidly evolving sectors of green chemistry, bio-compatible polymers, and advanced pharmaceutical carriers, securing an ultra-pure, structurally sound monomer is non-negotiable. If you are scaling production for medical-grade biomaterials or premium biodegradable plastics, you already know how critical chemical architecture is.
As a primary, factory-direct chemical synthesis partner, we specialize in the large-scale production of high-purity L-Lactide (CAS Number: 4511-42-6). By optimizing our manufacturing pathways, we provide global B2B procurement managers with a dependable, traceable supply line that completely avoids trading-firm markups and inconsistent batch chemistry.
Name: L-Lactide
CAS 4511-42-6
Purity: 99%min
MOQ: 1KG
Directory Guidance on Dihydromyrcene CAS 2436-90-0
Chemical Structure
Product Matrix: Technical Profile of CAS 4511-42-6
Known chemically as (3S,6S)-3,6-dimethyl-1,4-dioxane-2,5-dione or L-(-)-Dilactide, this white crystalline cyclic dimer serves as the fundamental building block for cutting-edge polylactic acid (PLA) engineering.
Critical Technical Specifications
- CAS Registry Number: 4511-42-6
- Molecular Formula: C6H8O4
- Molecular Weight: 144.13 g/mol
- Assay Purity (GC): Available in standard industrial grade (≥99.0%) and ultra-pure polymer/medical grade ≥99.5%).
- Optical Purity: (≥ 98.0%) ee up to (≥ 99.5%) ee based on project requirements.
- Melting Range: 96.0°C to 99.0°C.
- Moisture Content (Karl Fischer): (≤0.02%) (Crucial for preventing premature ring-opening during storage).
Application Scenarios
The structural uniformity of CAS 4511-42-6 makes it highly sought after across several high-performance industries:
Controlled-Release Drug Delivery Systems
In pharmaceutical manufacturing, L-Lactide is co-polymerized to create bio-absorbable microspheres, nanoparticles, and implantable drug-delivery matrices. These materials degrade predictably into non-toxic L-lactic acid within the human body.
Bio-Resorbable Medical Hardware
High-purity L-Lactide polymers are essential for producing orthopedic fixation devices, including biodegradable bone screws, pins, plates, and surgical sutures, eliminating the need for a second extraction surgery.
High-Performance Eco-Plastics
For high-end eco-packaging, textiles, and 3D printing filaments, our industrial-grade monomer acts as the core material for building high-molecular-weight Polylactic Acid (PLA). This provides excellent tensile strength and thermal stability compared to basic, multi-isomer blends.
FAQ
Q: How does meso-lactide contamination impact my polymer production?
High concentrations of meso-lactide break down the stereo-regularity of your chain, which lowers the crystallization rate and glass transition temperature of your finished plastic. Our multi-stage gas distillation limits meso-impurities to negligible levels.
Q: Can your facility produce custom physical forms, such as low-dust granules?
Yes. Depending on your material handling equipment, we can supply the product as either a fine crystalline powder, low-dust granular prills, or thin broken flakes. Please discuss your physical format preferences with our engineering team when submitting your RFP.
Q: What is your factory’s standard lead time for a 5-Metric Ton contract order?
If the material is not already in stock from our current production run, our typical lead time to complete synthesis, quality validation, vacuum packaging, and port delivery is 14 to 21 business days.
Advanced Production Technology
Many third-party suppliers sell crude, redistilled byproduct stocks. Our chemical plant utilizes a highly controlled, closed-loop two-stage synthesis process to produce exceptional quality L-Lactide:
[Raw L-Lactic Acid Sourcing] (Renewable Corn/Sugarcane Fermentation)
│
▼
[Oligomerization Dehydration] (Controlled vacuum & temperature)
│
▼
[Catalytic Depolymerization] (Cracking at targeted pressure)
│
▼
[Multi-Stage Gas Distillation] (Removes meso-lactide & heavy ends)
│
▼
[Recrystallization & Centrifugation] (Solvent-free refining)
│
▼
[Under Inert Gas: Finished Flakes/Powder]
We completely avoid heavy-metal catalysts like lead or antimony during depolymerization. Instead, we use highly active, proprietary organotin catalysts that are easily separated during distillation. This step prevents trace toxicity, which is a vital requirement for biomedical applications.
Product Advantages: Compared with Competitors
When comparing industrial B2B chemical options, a slightly lower price point can often mean higher impurity risks. Our manufacturing process delivers clear, measurable advantages over standard trading house inventories:
- Outstanding Optical Rigidity: Our batches consistently hold an optical purity of over 98.0% ee. This high purity prevents the polymer chain from twisting irregularly, resulting in finished PLA products with significantly higher melting points and crystal stability.
- Moisture Elimination: Since L-Lactide is highly sensitive to moisture, it can easily degrade into linear lactic acid when exposed to humid air. Our cleanroom packaging facility maintains ambient humidity below 10% RH, ensuring our monomer arrives perfectly stable for ring-opening polymerization.
- Minimal Free-Acid Levels: Residual free lactic acid can stall polymerization catalysts. Our rigorous purification limits free-acid content to less than 1-2 mmol/kg, allowing your production lines to run smoothly and predictably.
Plant Infrastructure & Scalable Production Capacities
Our industrial plant is built to support both fast-moving pilot validation projects and long-term contract manufacturing schedules:
- Scalable Output: Our advanced production unit delivers a reliable annual capacity of 600 Metric Tons of purified lactide dimers.
- Rigorous Analytical Validation: Our on-site quality control lab inspects every production run using gas chromatography (GC), high-performance liquid chromatography (HPLC) with chiral columns, and colorimetric Karl Fischer titration.
- Full Regulatory Compliance: Our manufacturing floors run under strict ISO 9001 and ISO 14001 frameworks, with complete REACH compliance data available for EU logistics.
Plant Infrastructure & Scalable Production Capacities
Previous
Next
Because CAS 2436-90-0 is classified as a Category 3 Flammable Liquid (Flash Point ~35.6°C), we handle all logistics with maximum safety compliance:
- Heavy-Duty Packing Solutions: Shipped securely in heavy-gauge 155kg galvanized iron drums or large-scale ISO Tanks designed for major bulk chemical movements.
- Dry Nitrogen Safeguard: We apply a strict dry nitrogen blanket to every single container before sealing. This completely eliminates head-space oxygen, preserving chemical freshness from our warehouse to your factory doors.
- Strategic Marine Port Access: Located adjacent to major international ocean-freight hubs, we offer flexible logistics infrastructure under FOB, CFR, CIF, and DDP terms, managed by certified hazardous-cargo forwarders.
Quality Control and Warehousing Infrastructure
Finished Product Quality Control
✅ Comprehensive quality control for every shipment prior to dispatch
✅Complete batch traceability system
Testing equipment
✅ In-house quality control laboratory
✅ Qualified personnel and a full range of testing equipment
Warehouse Facilities
✅ Finished goods warehouse: 300 m²
✅ Storage tank capacity: 50 tonnes
✅ Storage temperature range: 15–25°C
✅ Explosion-proof and anti-static design
Quality control documents provided with each batch партией
✅ COA (Certificate of Analysis)
✅ SDS (Safety Data Sheet)
✅ Certificate of Origin
✅ Packing List / Commercial Invoice
Company Photo Gallery
🔬 Laboratory
🏭 Our Factory
⚙️ Production Workshop
🛠 Production Equipment
👨🔬 Company employees
📜Patents and Certificates
🔬 Laboratory
Research and Analytical Laboratory SD LOOK CHEM
SDLOOK CHEM’s research and analytical center occupies over 1,500 square meters. It includes modern specialized laboratories: an analytical testing center, an organic synthesis laboratory, a formulation development laboratory, a physicochemical laboratory, an HPLC laboratory, a gas chromatography (GC) laboratory, and a pilot laboratory for pilot industrial testing.
The R&D team consists of 10 people.
Highly qualified specialists, including 3 Doctors of Science and 7 holders of a master’s degree.
Core activities include research and analysis of organic intermediates, pharmaceutical raw materials, food additives, and industrial chemicals.
The laboratory is equipped with state-of-the-art analytical instrumentation—including HPLC, GC, FTIR, NMR, and AAS—enabling a full operational cycle ranging from fundamental research to pilot-scale production. The company offers services in custom product development, formulation, and professional laboratory analysis.
All products undergo rigorous laboratory testing prior to shipment, ensuring consistent and reliable quality for every batch.
Laboratory positioning
The Zhishang Chemical research laboratory serves as the company’s key hub for technological innovation. The laboratory specializes in research, analysis, and applied development regarding organic intermediates, pharmaceutical raw materials, food additives, and industrial chemicals, providing robust scientific and technical support for product quality and the company’s continuous development.
Intellectual property results
📜 6 registered invention patents
📜 3 invention patents pending
📜 12 utility model patents
Quality Control (QC) Laboratory
✅ Area: approximately 150 m²
✅ Independent laboratory, fully isolated from production areas
✅Constant temperature and humidity control systemstart=”2157″ data-end=”2160″ />✅ Equipped with professional analytical and testing equipment
✅Staff of 5 quality control specialists
🏭 Our Factory
Production facility area: approximately 10,000 m²
⚙️ Production Workshop
Production Workshop
✅ Workshop area: approximately 3 000 м²
✅ Closed production environment prevents contamination.
✅ Equipped with a ventilation and exhaust system.
✅ Explosion-proof and anti-static design
✅ Emergency showers and eyewash stations
✅ 24-hour video surveillance (24/7)
🛠 Production Equipment
👨🔬 Company employees
Laboratory Personnel
Administrative and commercial department
✅ A sales team of over 10 specialists
✅ Customer service in Chinese, English, and Russian
✅ 24/7 customer support
✅ Modern video conferencing tools for conducting remote negotiations and online enterprise audits (virtual inspection visits)
CEO
📜Patents and Certificates
Intellectual property results
📜 10 registered patents for inventions have been obtained.
📜 3 invention patents are under review (applications have been filed).
📜 12 utility model patents obtained
Technical Support & Analytical Warranties
Our technical relationship with your engineering team continues long after your shipment arrives at your loading dock:
- Traceable Documentation: Every shipment arrives with a lot-specific Certificate of Analysis (COA), an updated GHS-compliant Safety Data Sheet (SDS), and complete customs documentation.
- Technical Synthesis Support: If you face challenges with molecular weight building or polymer discoloration during manufacturing, our engineers can assist you with compounding temperature curves and catalyst ratio optimization.
- Retained Batch Samples: We securely archive identical reference samples from every single lot for 24 months, enabling rapid side-by-side re-testing if you observe any variances on your factory floor.
