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1. PRODUCTION DESCRIPTION:
White or off-white granular,slight characteristic odor,
freely soluble in water(approx. 1400g/L at 20°C),less soluble in ethyl alcohol(approx.1g/L at 20°C) and practically insoluble in ether. It decomposes at about 270°C.
2. PHYSICAL ANALYSIS:
Purity | Index |
Assay(on dry weight basis)% | 99.0%-101.0% of C6H8O2,on dry weight basis |
Melting range | 133-135°C |
Acidity(as sobic acid) | Passes test (about 1%) |
Heat stability | No discoloration after heating 90 minutes at 105°C |
Free alkalinity(calc. as K2CO3)% | Passes test (about 1%) |
Loss on drying% PH-Value | ≤1%(Karl Fischer method,105°C for 3 h) 8.5-10.5(10% water solution) |
Heavy metals(as lead),% | ≤10ppm |
Lead,% | ≤2ppm |
Mercury | ≤1ppm |
Aldehydes(as formaldehyde)% | ≤0.1% |
Arsenic,ppm | ≤2ppm |
Cadmium | ≤0.02ppm |
Zinc | ≤0.1ppm |
Chloride | ≤180ppm |
Sulfate(as S04)% | ≤380ppm |
Appearance | White or off white granular |
Particle Size(As Mesh) | 20 Mesh |
Potassium Sorbate Granular food additive/preservative e202