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Specification
Product Name
CHROMOTROPE FB
Synonyms
Disodium 2-(4-sulfo-1-naphthylazo)-1-naphthol
-4-sulfonate.
C.I. NO.
14720
CAS NO.
3567-69-9
Molecular Formula
C
20
H
12
N
2
Na
2
O
7
S
2
Formula Weight
502.43
Appearance
Dark Red to Brown to Black powder
Structure
Tests
Limits
UV-Visible Spectrum
- 0.03 G/L, H2OE
(516 +/- 3NM) = >14,500
E (323 +/- 3NM) = >9,000
E (217 +/- 3NM) = >33,000
REVISED: 1-1-2012
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