L(+)-Lactic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 79-33-4 |
| Product name | L(+)-Lactic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty GradeIndustrial GradeElectronic GradeCosmetic GradeFood Grade |
| Packaging | 25L/drum200L/drum1000L/IBC |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
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Documents We Provide for L(+)-Lactic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk L(+)-Lactic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of L(+)-Lactic acid
| Industry | Applications | Process |
|---|---|---|
| Food Industry | Acidulant, preservative, pH regulator | Directly added to beverages, dairy products, baked goods, confectionery, etc., to adjust acidity and extend shelf life |
| Pharmaceutical Industry | Pharmaceutical excipient, sustained-release material, chiral synthesis intermediate | Used to prepare biodegradable polylactic acid (PLA) drug delivery carriers or as a starting material for chiral drug synthesis |
| Cosmetics Industry | Humectant, keratolytic agent, pH regulator | Incorporated into skincare products, shampoos, and facial cleansers to promote gentle exfoliation and keratinocyte turnover via mild alpha-hydroxy acid action |
| Biodegradable Materials | Monomer feedstock for polylactic acid (PLA) | Processed into PLA via condensation polymerization or ring-opening polymerization for manufacturing biodegradable plastics, fibers, and packaging materials |
| Textile Industry | Fiber treatment agent, dyeing auxiliary | Applied to adjust dye bath pH, improving dye uptake efficiency and fiber softness |
| Agriculture | Biopesticide adjuvant, feed additive | Added to animal feed as an organic acid supplement to support gut health, or formulated into eco-friendly pesticide preparations |
| Electronics Industry | Component of environmentally friendly cleaning agents | Formulated into low-toxicity, biodegradable cleaning solutions for metals or printed circuit boards |
Manufacturing Quality Control of L(+)-Lactic acid
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Utilizes a reversed-phase C18 column with mobile phases such as dilute sulfuric acid or phosphate buffer-methanol, and detects L-lactic acid peaks using a UV detector (typically around 210 nm). Quantification is performed via external standard or internal standard method. This method offers high specificity and good reproducibility, making it suitable for accurate determination of L-lactic acid content in raw materials and formulations. |
| Optical Purity (L-Configuration Ratio) | Enzymatic Method (L-Lactate Dehydrogenase Assay) | L-Lactate dehydrogenase (L-LDH) specifically catalyzes the conversion of L-lactic acid to pyruvate, reducing NAD⁺ to NADH. The increase in absorbance at 340 nm is measured to calculate L-lactic acid concentration. D-Lactic acid is not recognized by the enzyme, allowing assessment of optical purity. |
| pH Value | pH Meter Method | Prepare a water solution of L-lactic acid at a specified concentration, then directly measure its pH using a calibrated pH meter. This ensures acidity control within the acceptable range defined by pharmacopoeial or company specifications. |
| Specific Rotation | Polarimetry Method | Prepare a solution of L-lactic acid at a defined concentration and measure its optical rotation under standard conditions (temperature typically 20°C or 25°C, wavelength sodium D line at 589.3 nm) using a polarimeter. Specific rotation is calculated to identify the L-configuration and assess optical purity. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Uses gradient or isocratic HPLC systems to separate potential impurities in L-lactic acid (such as D-lactic acid, acetic acid, pyruvic acid, lactyl lactate, etc.). Impurity levels are assessed using peak area normalization or reference standard methods. |
| Moisture Content | Karl Fischer Titration | Employs Karl Fischer reagent to quantitatively react with water in the sample, measuring moisture content via either volumetric or coulometric titration. This method provides precise control over trace moisture levels in L-lactic acid. |
| Residue on Ignition / Ash Content | Residue on Ignition Test Method | A definite amount of sample is ignited at high temperature (typically 700–800°C) until constant weight is achieved. The mass of the residual inorganic matter is weighed to control total inorganic impurity levels. |
| Heavy Metals | Thioacetamide Method (or ICP-MS) | Follows pharmacopoeial procedures: thioacetamide generates hydrogen sulfide under acidic conditions, forming colored precipitates with heavy metal ions for visual limit testing; alternatively, inductively coupled plasma mass spectrometry (ICP-MS) may be used for quantitative analysis of trace heavy metal elements. |
Technical Specifications of L(+)-Lactic acid
| Test Item | Specification |
|---|---|
| Appearance | Colorless to almost colorless clear liquid |
| Purity | >=98.5% (by NMR in water) |
| Water Content (KF) | <=0.5% |
| Optical Rotation | -10.0 to -15.0 deg (c=10, H2O) |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Acid Value (mg KOH/g) | 45.0 to 49.0 mg KOH/g |
| Refractive Index (n20/D) | 1.437 to 1.442 |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of L(+)-Lactic acid
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NMR Spectra of L(+)-Lactic acid
Packaging of L(+)-Lactic acid
Industrial L(+)-Lactic acid Procurement FAQ
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.
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