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α-Naphthol Orange
(CAS RN:523-44-4 Product Number:N0308)


alpha-Naphthol Orange
Synonym Acid Orange 20
Synonym Orange I
Synonym Tropaeolin OOO-1

General Information

Product Number N0308

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Purity/Analysis Method
Storage Temperature
M.F. / M.W. C16H11N2NaO4S=350.32
CAS RN 523-44-4
Related CAS RN
MDL Number MFCD00021510
Packaging and Container
  • Product Details
  • Safety & Regulations


Lambda max. 474.0 to 478.0 nm(0.02mol/L AcONH4 sol.)
Absorbance(E1%1cm) min. 720(0.02mol/L AcONH4 sol., 474.0 to 478.0 nm)


Colour Index 14600
Reaxys-RN 6037394
PubChem SID 87573666
Merck Index(14) 6857
RTECS# DB7085000
EC Number 208-346-6

Transport Information

HS Number 2927000090


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