2,2′-Thiodiethanol
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This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition
Issued and maintained by the United States Pharmacopeial Convention (USP)
(HOCH2CH2)2S 122.19 CAS RN®: 111-48-8.—Pale yellow to colorless liquid.
Assay: Not less than 98% of C H O S is found, a suitable gas chromatograph equipped with a flame-ionization detector being used. The
following conditions have been found suitable: a 4.0-mm × 1.83-m glass column is packed with 10% phase G25 on support S1A; the column,
injection port, and detector temperatures are maintained at 200°, 250°, and 310°, respectively.
Refractive Index〈831〉: between 1.4250 and 1.4270, at 20°.
