D(+)-Malic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 636-61-3 |
| Product name | D(+)-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 D(+)-Malic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk D(+)-Malic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of D(+)-Malic acid
| Industry | Application | Process |
|---|---|---|
| Food Industry | Acidulant, flavoring agent | Added to food or beverages to adjust acidity and enhance flavor |
| Pharmaceutical Industry | Intermediate for drug synthesis | Used in the synthesis of chiral pharmaceuticals or their derivatives |
| Chemical Industry | Raw material for fragrance and cosmetic formulations | Acts as a fragrance fixative or humectant in cosmetics |
| Agriculture | Synthesis of biopesticides | Serves as a precursor or carrier for certain bioactive compounds |
| Household & Personal Care | Ingredient in detergent formulations | Provides metal ion chelation to enhance cleaning performance |
Manufacturing Quality Control of D(+)-Malic acid
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Identification Test | Infrared Spectroscopy (IR) | By measuring the infrared absorption spectrum of the sample and comparing it with the standard spectrum, the characteristic functional groups (such as carboxyl and hydroxyl groups) of D-(+)-malic acid are confirmed based on their absorption peaks. |
| Identification Test | Specific Rotation Determination | Using a polarimeter, the optical rotation is measured at a specified concentration and temperature, and the specific rotation is calculated to verify whether its optical activity conforms to the D-(+)-configuration (usually a positive value). |
| Acidity/Total Acid Content | Acid-Base Titration Method | Using phenolphthalein as an indicator, the sample aqueous solution is titrated with a standard sodium hydroxide solution. The total acid content (calculated as malic acid) is determined based on the amount of alkali consumed. |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Using a reversed-phase C18 column, a mobile phase such as dilute sulfuric acid or phosphate buffer-methanol is employed, and detection is performed using a UV detector (typically at around 210 nm). The content of D-(+)-malic acid is quantified by external standard method or internal standard method. |
| Content Determination | Non-Aqueous Titration Method | Malic acid is determined in a non-aqueous solvent (such as glacial acetic acid), using perchloric acid as the titrant and crystal violet as the indicator. This method is suitable for high-purity samples. |
| Related Substances / Impurity Check | High-Performance Liquid Chromatography (HPLC) | Using gradient elution or isocratic elution conditions, possible impurities (such as L-malic acid, fumaric acid, maleic acid) are separated and detected. The level of impurities is assessed using peak area normalization or reference standard method. |
| Drying Loss | Thermogravimetric Analysis (TGA) or Atmospheric Drying Method | The sample is dried at 105°C until constant weight, and the percentage of mass loss is measured to evaluate the moisture and volatile substance content. |
| Residue on Ignition | High-Temperature Ashing Method | The sample is incinerated at a high temperature (approximately 600–800°C), and the mass of the residual inorganic matter is weighed to control the total amount of inorganic impurities. |
| Heavy Metals | Sulfanilamide Method (Colorimetric Method) or Atomic Absorption Spectrometry (AAS) | Heavy metal elements such as lead, arsenic, and cadmium are determined through colorimetric reactions or instrumental analysis to ensure compliance with pharmacopoeia or food-grade limits. |
| pH Value | pH Meter Measurement Method | A solution of specified concentration (e.g., 10% w/v) is prepared, and its pH is directly measured using a calibrated pH meter to verify whether it falls within the standard range (typically around 2.0–3.0). |
Technical Specifications of D(+)-Malic acid
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Melting Point | 100-103°C |
| Optical Rotation | +26.0 to +30.0° (c=10, H2O) |
| Total Impurities | <=2.0% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
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 D(+)-Malic acid
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NMR Spectra of D(+)-Malic acid
Packaging of D(+)-Malic acid
Industrial D(+)-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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