Sanitation Standards for Propane to be Used in Food

The Standards are prescribed in accordance with the provisions of Article 17 of the Act Governing Food Sanitation.

The name of the chemical is propane, CAS Reg. No. 74-98-6, the formula of the chemical is indicated as C3H8, and its molecular weight is 44.10.

┌──────────┬───────────────────┐│ Item │ Standards │├──────────┼───────────────────┤│Purity │Not less than 95% (v/v) │├──────────┼───────────────────┤│Characteristics │Colorless, odourless and flammable gas│├──────────┼───────────────────┤│Boiling temperature │-42 ℃ │├──────────┼───────────────────┤│Solubility │One volume of water dissolves 0.065 ││ │volumes at 17.8 ℃ and 753 mmHg; 1 ││ │volume of anhydrous alcohol dissolves ││ │7.9 volumes at 16.6 ℃ and 754 mmHg; 1││ │volume of ether dissolves 9.26 volumes││ │at 16.6 ℃ and 757 mmHg; 1 volume of ││ │chloroform dissolves 12.99 volumes at ││ │21.6℃ and 757 mmHg. │├──────────┼───────────────────┤│Infrared absorption │The spectrum of a sample exhibits ││spectrum │at approximately 3.4μm(vs),6.8μm(s),││ │and 7.2μm(m). │├──────────┼───────────────────┤│Moisture content │Not exceed 0.005 % │├──────────┼───────────────────┤│High-boiling residue│Not exceed 5 mg/kg │├──────────┼───────────────────┤│Acidity of │Add 10 mL of water to the sample, mix ││high-boiling residue│by swirling for about 30 s, add 2 ││ │drops of methyl orange TS, insert the ││ │stopper in the tube, and shake the ││ │tube vigorously. No pink or red color ││ │appears in the aqueous layer. │├──────────┼───────────────────┤│Sulfur compounds │The gas is free from the ││analysis │characteristic odor of sulfur ││ │compounds. │└──────────┴───────────────────┘

The Standards shall be implemented on the date of promulgation.