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Product Name | Dyestuff Intermediate 3, 4-Dihydroxybenzoic Acid 99% Purity Protocatechuic Acid | ||||||
Specification | 99% | ||||||
Appearance | White crystalline powder | ||||||
Cas | 99-50-3 | ||||||
Sample | Avaliable | ||||||
MOQ | 1Kg | ||||||
Shelf life | 2years | ||||||
Package | 1kg Dyestuff Intermediate 3, 4-Dihydroxybenzoic Acid 99% Purity Protocatechuic Acid Powder with double plastic container inside/Aluminum foil bag outside. 1kg/Carton,5kgCarton,10kg/Carton,25kg/Drum, OEM | ||||||
Shipment | FedEx,DHL,EMS,UPS | ||||||
Delivery time | Within 2-3 work days after payment | ||||||
Payment terms | TT,Alibaba Trade Assurance,Western Union |
Product Name | Protocatechuic Acid | ||
Test Items | Specifications | Result | |
Assay | 99.0-100.5% | 99.73% | |
PH | 2.5-3.5 | 2.74 | |
Specific rotation[a]D20 | +24.8°-+25.8° | +25.2° | |
Specific rotation[a]D25 | / | Conforms | |
Transmittance(T430) | ≥98.0% | 98.43% | |
Chloride(CI) | ≤0.02% | Conforms | |
Ammonium(NH4) | ≤0.02% | Conforms | |
Sulfate(SO4) | ≤0.02% | Conforms | |
Iron(Fe) | ≤10PPM | Conforms | |
Heavy metals(Pb) | ≤10PPM | Conforms | |
Arsenic | ≤1PPM | Conforms | |
Other amino acids | conform | Conforms | |
Ninhydrin-positive substances | / | Conforms | |
Loss on drying | ≤0.20% | Absent | |
Residue on ignition | ≤0.10% | Absent | |
Conclusion | Conform with the specification. | ||
Storage | Store in cool and dry places, keep away from strong light and heat | ||
Shelf Life | 36 months under the above condition and in its original package |
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