27160

Sigma-Aldrich

Chromotropic acid disodium salt dihydrate

technical, ≥80% (T)

Synonym(s):
4,5-Dihydroxynaphthalene-2,7-disulfonic acid disodium salt, 1,8-Dihydroxynaphthalene-3,6-disulfonic acid disodium salt
Linear Formula:
(HO)2C10H4(SO3Na)2·2H2O
CAS Number:
Molecular Weight:
400.29
EC Number:
MDL number:

grade

technical

assay

≥80% (T)

mp

>300 °C (lit.)

SMILES string

O.O.[Na+].[Na+].Oc1cc(cc2cc(cc(O)c12)S([O-])(=O)=O)S([O-])(=O)=O

InChI

1S/C10H8O8S2.2Na.2H2O/c11-8-3-6(19(13,14)15)1-5-2-7(20(16,17)18)4-9(12)10(5)8;;;;/h1-4,11-12H,(H,13,14,15)(H,16,17,18);;;2*1H2/q;2*+1;;/p-2

InChI key

QUEAKWJKJBFNEG-UHFFFAOYSA-L

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Certificate of Origin

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