P-Aminobenzoic acid (PABA)
City: LV, Marupe
Please avoid sudden changes in temperature and humidity, as they may affect the condition of derivative ingredients and tablets.
The shelf life begins from the date of manufacture at the factory.
Taking into account logistical and transportation stages, the remaining shelf life of the product is always shorter than the full shelf life.
We ship products to our customers with a remaining shelf life of no less than 70%.
Physical & Chemical Characteristics
Analysis Item | Specification | Result |
Characters | White or light-yellow crystal/crystalline powder without smell | White crystalline powder without smell |
Identification – IR | IR spectrum consistent with reference standard | Conforms |
Identification – Solution | Solution max absorbance/retention time consistent with reference | Conforms |
Loss on drying | NMT 0.2% | 0.12% |
Residue on ignition | NMT 0.1% | 0.04% |
Assay | 98.0–102.0% | 99.79% |
Organic Impurities (HPLC)
Analysis Item | Specification | Result |
Nitrobenzoic acid | NMT 0.2% | Not detected |
Anisic acid | NMT 0.2% | Not detected |
Any unspecified impurity | NMT 0.1% | 0.01% |
Total impurities | NMT 0.5% | 0.01% |
Aromatic Amines (GC)
Analysis Item | Specification | Result |
Aniline (GC) | NMT 10 ppm | Not detected |
o-Toluidine (GC) | NMT 10 ppm | 0.00315 ppm |
Heavy Metals
Analysis Item | Specification | Result |
Lead (Pb) | ≤1 ppm | Not detected |
Cadmium (Cd) | ≤1 ppm | Not detected |
Mercury (Hg) | ≤0.1 ppm | Not detected |
Arsenic (As) | ≤1 ppm | Not detected |
Microbiological Tests
Analysis Item | Specification | Result |
Aerobic plate count | NMT 100 cfu/g | <100 cfu/g |
Yeasts & Molds | NMT 100 cfu/g | <10 cfu/g |
E. coli | Negative | Negative |
Coliforms | NMT 100 cfu/g | <10 cfu/g |
Salmonella | Negative | Negative |