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Acid Orange 7
(CAS RN:633-96-5 Product Number:G0158)


Acid Orange 7
Synonym Gold Orange
Synonym p-(2-Hydroxy-1-naphthylazo)benzenesulfonic Acid Sodium Salt
Synonym Orange II
Synonym Tropaeolin OOO-2

General Information

Product Number G0158

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Purity/Analysis Method >97.0%(HPLC)
Storage Temperature
M.F. / M.W. C16H11N2NaO4S=350.32
CAS RN 633-96-5
Related CAS RN
MDL Number MFCD00011657
Packaging and Container
  • Product Details
  • Safety & Regulations


Purity(HPLC) min. 97.0 area%
Lambda max. 482.0 to 486.0 nm(0.02mol/L AcONH4 sol.)
Absorbance(E1%1cm) min. 500(0.02mol/L AcONH4 sol., 482.0 to 486.0 nm)


Colour Index 15510
Beilstein 16,274
Reaxys-RN 8177125
PubChem SID 87570353
Merck Index(14) 6858
RTECS# DB7084000
EC Number 211-199-0


Signal Word Warning
Hazard Statements
  • H315
  • :Causes skin irritation.
  • H319
  • :Causes serious eye irritation.
Precautionary Statements
  • P264
  • :Wash hands and face thoroughly after handling.
  • P280
  • :Wear protective gloves, eye protection.
  • P302+P352+P332+P313+P362+P364
  • :IF ON SKIN: Wash with plenty of water. If skin irritation occurs: Get medical advice or attention. Take off contaminated clothing and wash it before reuse.
  • P305+P351+P338+P337+P313
  • :IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice or attention.

Transport Information

HS Number 2927000090


PubMed Literature

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