L-Malic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 97-67-6 |
| Product name | L-Malic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeIndustrial GradeSpecialty GradeCosmetic GradeFood Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| 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-Malic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk L-Malic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of L-Malic acid
| Industry | Application | Process |
|---|---|---|
| Food & Beverage | Acidulant, pH regulator | Used as an acidity regulator in beverages, confectionery, jams, and other food products to enhance flavor and extend shelf life |
| Pharmaceuticals | Excipient for sustained-release formulations, metabolic modulator | Employed as a sustained-release carrier in oral dosage forms or as an active pharmaceutical ingredient in the adjunctive treatment of organic acid metabolism disorders |
| Cosmetics | pH regulator, humectant | Incorporated into skincare products to adjust pH, improve skin hydration, and enhance formulation stability |
| Agriculture | Plant growth regulator, foliar fertilizer additive | Co-formulated with fertilizers to promote nutrient uptake in plants and improve crop stress tolerance |
| Chemical Intermediates | Raw material for synthesizing other organic acid derivatives | Processed via esterification, condensation, and related reactions to produce intermediates for pharmaceuticals, fragrances, and polymer materials |
Manufacturing Quality Control of L-Malic acid
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Using a reverse-phase C18 chromatographic column and a UV detector (typically at around 210 nm), with phosphate buffer or dilute acid as the mobile phase, to achieve separation and quantification of L-malic acid from other organic acids. It offers high sensitivity and accuracy. |
| Acid-Base Titration | Utilizing the carboxyl groups of L-malic acid reacting with standard sodium hydroxide solution through neutralization, determining the endpoint via indicators (e.g., phenolphthalein) or potentiometric titration, and calculating its content. Suitable for high-purity samples; simple operation but poor specificity. | |
| Purity Analysis | Ion Chromatography (IC) | Using an anion-exchange column and a suppressed conductivity detector, capable of simultaneously detecting malic acid and other impurity anions (such as citric acid, fumaric acid, etc.), suitable for trace impurity analysis in high-purity samples. |
| Gas Chromatography (GC) | After derivatization (e.g., esterification or silylation), L-malic acid is converted into volatile derivatives, which are then separated and detected by gas chromatography. Suitable for trace analysis, but with more complex pretreatment. | |
| Enantiomeric Purity | Chiral High-Performance Liquid Chromatography | Using a chiral stationary phase column to distinguish between L-malic acid and D-malic acid enantiomers, ensuring no contamination from D-isomers, used to evaluate optical purity. |
| Moisture Content | Karl Fischer Titration | Based on the quantitative reaction between iodine and sulfur dioxide in the presence of pyridine and methanol with water, precisely measuring moisture content in the sample. Divided into volumetric and coulometric methods, suitable for trace moisture detection. |
| pH Value | pH Meter Measurement | Preparing a certain concentration aqueous solution of L-malic acid (e.g., 1% solution), and directly measuring its acidity using a calibrated pH meter. |
| Heavy Metals | Atomic Absorption Spectrometry (AAS) or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | Determining the content of heavy metals such as lead, arsenic, mercury, and cadmium after sample digestion, ensuring compliance with pharmacopoeia or food safety standards. |
| Sulfate and Chloride | Turbidimetry or Ion Chromatography | Sulfate: White precipitate forms when reacted with barium chloride under acidic conditions, and turbidimetric quantification is performed; Chloride: Reacts with silver nitrate to form silver chloride precipitate. Ion chromatography can also be used for precise quantification. |
| Microbial Limit | Microbial Culture Method | Carrying out total aerobic bacterial count, mold and yeast count, and control organism tests (e.g., Escherichia coli, Salmonella) according to pharmacopoeia or food standards, ensuring microbial safety. |
Technical Specifications of L-Malic acid
| Test Item | Specification |
|---|---|
| Appearance | White to off-white powder |
| Assay | ≥97.0% |
| Fumaric acid | ≤0.5% |
| Maleic acid | ≤0.05% |
| Succinic acid | ≤2.0% |
| D-malic acid | ≤0.5% |
| As | ≤1.5 ppm |
| Pb | ≤0.5 ppm |
| Cd | ≤0.5 ppm |
| Hg | ≤3.0 ppm |
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-Malic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of L-Malic acid
Packaging of L-Malic acid
Industrial L-Malic 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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