130796
3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)-2-naphthalenecarboxylic acid
indicator grade, Dye content 60 %
Synonym(s):
2-Hydroxy-1-(2-hydroxy-4-sulfo-1-naphthylazo)-3-naphthoic acid, Cal-Red™, Calconcarboxylic acid, HHSNN, Patton and Reeder’s reagent
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About This Item
Linear Formula:
HOC10H5[N=NC10H5(OH)SO3H]CO2H
CAS Number:
Molecular Weight:
438.41
UNSPSC Code:
12171500
EC Number:
223-117-0
Beilstein/REAXYS Number:
727492
MDL number:
SMILES string
OC(=O)c1cc2ccccc2c(N=Nc3c(O)cc(c4ccccc34)S(O)(=O)=O)c1O
grade
indicator grade
composition
Dye content, 60%
mp
300 °C (lit.)
λmax
366 nm, 560 nm (2nd)
Legal Information
Cal-Red is a trademark of Sigma-Aldrich Co. LLC
Regulatory Information
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