Certificate of Analysis-COA
99% Content
ITEM | STANDARD | RESULTS |
Color | White | White |
Smell | Special sour odor | Qualified |
Form | Crystalline or crystalline powder | Qualified |
DL-Malic acid (C4H6O5) | ≥99% | 99.3% |
Specific rotation (20℃), (°)·dm²·kg⁻¹ | -1.6~2.6 | -2.1 |
Ignition residue | ≤0.1% | 0.03% |
As, mg/kg | ≤2 | <2 |
Pb, mg/kg | ≤2 | <2 |
Fumaric acid | ≤0.5% | 0.06 |
Maleic acid | ≤0.05% | <0.01 |
Heavy metals, (Pb), mg/kg | ≤10 | <10 |
Sulphate, SO4 | ≤0.02% | <0.02 |
Chloride, Cl | ≤0.004% | <0.004 |
Conclusion | Qualified | Qualified |
Applications
1. Acidulant For Beverages And Confectionery: Its tart, lingering acidity makes it a leading sour agent for soft drinks, lactic acid bacteria drinks, milk drinks, cola style beverages, energy drinks, juices and nectars, and it also sets the acidity of jams, jellies, marmalades and sour fruit candies.
2. Alpha Hydroxy Acid For Skin Care: In cosmetics it acts as an alpha hydroxy acid that supports exfoliation and skin renewal and as a pH adjuster, while its sodium salt brings humectancy, so formulators use it in cleansers, serums, peel products and hair care.
3. Feed Acidifier For Livestock: Feed producers use it to acidify rations, where it improves feed efficiency, lifts palatability and supports gut health in livestock, and it is easy to blend into premixes.
4. Chelating Agent For Cleaning, Metal Treatment And Textiles: Its two carboxyl groups and one hydroxyl group bind metal ions, so it appears in cleaner formulations, in metal cleaning and descaling where a milder organic acid is wanted, and in textile finishing and dyeing baths.
Quality Assurance
Every batch of chemicals leaves our factory with complete laboratory documentation — not a promise, but verifiable test data. From incoming raw material inspection to finished-goods release, each batch is tested against published specifications, and a Certificate of Analysis (COA) accompanies every single shipment. What you order is exactly what we test — and what we ship.
Tested by our in-house ISO 9001:2015 laboratory. Verified independently by third-party labs on request (SGS / BV / Intertek). Traceable from raw material to your warehouse.
Packaging
Woven Bags
Kraft Paper Bags
Big Bags
Export-grade packaging, custom labels
Solids (woven bags/cardboard drums/ton bags)
Liquids (plastic drums/IBC/ISO tanks)