H2O 18.02 7732-18-5
PURIFIED WATER IN BULK
Category Pharmaceutic aid.
Purified Water in Bulk is prepared by means of distillation, ion exchange or any other appropriate method, from water that complies with the regulations on water intended for human consumption laid down by the competent authority. It contains no added substance.
(Note Purified Water in Bulk is intended for use as an ingredient of official preparations and in tests and assays unless otherwise specified.)
Description
Clear, colourless liquid; odourless.
Total organic carbon
Complies with the “Total Organic Carbon” (Appendix 4.36). Alternatively the test method for Oxidizable substances may be performed. To 100 ml, add 10 ml of 1 M sulfuric acid, and heat to boiling. Add 0.20 ml of 0.020 M potassium permanganate, and boil for 5 minutes: the pink colour does not completely disappear.
Water conductivity
Complies with the “Water Conductivity” (For Bulk Water, Appendix 4.37).
Microbial limit
Total aerobic microbial count does not exceed 2×102 CFU per ml, determined by membrane filtration (Appendix 10.2).
Source/Reference
Thai Herbal Pharmacopoeia 2021 Page 854-856, Bureau of Drug and Narcotic, Department of Medical Sciences, Ministry of Public Health, Thailand.
FOR ACADEMIC PURPOSES ONLY