Characteristics:
Slightly spicy.Hygroscopic, stable under normal conditions, but at high temperatures prone to propanaldehyde, lactic acid, pyruvate and acetic acid.
Purpose:
Solvents, organic synthesis, antifreezer, plasticizer, fungicide.
Specifications:
[Properties] should be colorless and clarified viscous liquid; odorless, slightly sweet; hygroscopic; should be miscible with water, ethanol or chloroform.
Relative density (25 ° C)... should be 1.035~1.037
[Appraisal]
The retention time of the main peak of the test solution should be consistent with the retention time of the main peak of the reference solution.
[an examination]
Content... containing C3H8O2 should be no less than 99.5%
Acidity... should comply with regulations
Chloride... should not exceed 0.007%
Sulfate... should not exceed 0.006%
The relevant substance (diethylene glycol) should not exceed 0.001%
The relevant substance (dipropylene glycol) ... should not exceed 0.1%
Related substances (tripropylene glycol) ... should not be 0. 03%
The relevant substance (propylene oxide) ... should not exceed 0.001%
Oxidizing substances... should comply with regulations
Reducing substances... should comply with regulations
Moisture... should not exceed 0.2%
Residue on ignition... should not exceed 3.5mg
Heavy metal... should not exceed 5 parts per million
Arsenic salt... should not exceed 0.0002%
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