Tropaeolin OO
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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)
(Acid Orange 5), C18H14N3NaO3S 375.38 CAS RN®: 554-73-4.—Orange-yellow scales, or yellow powder. Soluble in water.
pH range: from 1.4 (red) to 2.6 (yellow).
