Orange IV
橙黄Ⅳ
Also known as: Tropaeolin OO, Acid Orange 5, C.I. 13080, Acid Orange IV, Tropeolin OO, Diphenylamine Orange, Sodium 4-[(4-anilinophenyl)azo]benzenesulfonate, Benzenesulfonic acid, 4-[[4-(phenylamino)phenyl]azo]-, monosodium salt
- CAS No.
- 554-73-4
- Jingsj CID
- J-44323-6
- Molecular Formula
- C18H14N3NaO3S
- Chinese Name
- 橙黄Ⅳ
- Molecular Weight
- 375.377 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
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IrritantSignal word: Warning
Frequently Asked Questions
What is the CAS number of Orange IV?
554-73-4
What are the molecular formula and molecular weight of Orange IV?
C18H14N3NaO3S, molecular weight 375.377 g/mol
Is Orange IV hazardous?
Warning
Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026