Packaging and storage
Preserve in tight, light-resistant containers.
To 1 mL add 0.1 mL of cupric sulfate TS
: a deep blue color is produced. Add 5 mL of 1 N sodium hydroxide, and concentrate to one-third of the original volume by boiling: the blue color remains.
Heat 1 mL gently in a test tube: the vapors turn moistened red litmus paper blue.
Water, Method I 921 :
not more than 0.5%, a mixture of 5.0 mL of glacial acetic acid and 20 mL of methanol being used as the solvent.
Transfer about 2 g of Trolamine, accurately weighed, to a 300-mL conical flask. Add 75 mL of water and 2 drops of methyl red TS
, and titrate with 1 N hydrochloric acid VS: each mL of 1 N hydrochloric acid is equivalent to 149.2 mg of triethanolamine, expressed as N(C2
: Catherine Sheehan, B.Sc., Scientist
Expert Committee : (EM105) Excipient Monographs 1
USP29NF24 Page 3453
: Volume No. 31(5) Page 1427
Phone Number : 1-301-816-8262