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Acetylsalicylic acid Aspirin CAS: 50-78-2
Items |
Standard |
Results |
Appearance |
White or almost white crystalline powder |
White crystalline powder |
Identification A. IR-Spectrum |
Positive |
Positive |
B. melting point of salicylic acid(°C) |
156-161 |
157.5 |
Identification A. Ferric Acid reaction test |
Complies |
Complies |
B. IR-Spectrum |
Positive |
Positive |
Appearance of solution |
Clear and colorless |
.Clear and colorless |
Readily carbonizable substances |
≤Fluid Q |
< Fluid Q |
Substances Insoluble in Sodium Carbonate TS |
Clear |
Clear |
Chloride (%) |
≤0.014 |
< 0.014 |
Sulfate (%) |
≤0.04 |
< 0.04 |
Limit of free salicylic acid(%) |
≤0.1 |
<0.1 |
Heavy metals |
≤10PPM |
< 10PPM |
Loss on drying(%) |
≤0.5 |
0.2 |
Sulphated ash/ Residue on Ignition(%) |
≤0.05 |
0.03 |
Related substances/Any single impurity (%) |
≤0.1 |
Disregard (<0.025% |
Items |
Standard |
Results |
Appearance |
White or almost white crystalline powder |
White crystalline powder |
Identification A. IR-Spectrum |
Positive |
Positive |
B. melting point of salicylic acid(°C) |
156-161 |
157.5 |
Identification A. Ferric Acid reaction test |
Complies |
Complies |
B. IR-Spectrum |
Positive |
Positive |
Appearance of solution |
Clear and colorless |
.Clear and colorless |
Readily carbonizable substances |
≤Fluid Q |
< Fluid Q |
Substances Insoluble in Sodium Carbonate TS |
Clear |
Clear |
Chloride (%) |
≤0.014 |
< 0.014 |
Sulfate (%) |
≤0.04 |
< 0.04 |
Limit of free salicylic acid(%) |
≤0.1 |
<0.1 |
Heavy metals |
≤10PPM |
< 10PPM |
Loss on drying(%) |
≤0.5 |
0.2 |
Sulphated ash/ Residue on Ignition(%) |
≤0.05 |
0.03 |
Related substances/Any single impurity (%) |
≤0.1 |
Disregard (<0.025% |
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