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Merck
CN

59828

Chromotropic acid disodium salt dihydrate

reagent grade, ≥95.0%

Synonym(s):

1,8-Dihydroxynaphthalene-3,6-disulfonic acid disodium salt, 4,5-Dihydroxynaphthalene-2,7-disulfonic acid disodium salt

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About This Item

Linear Formula:
(HO)2C10H4(SO3Na)2·2H2O
CAS Number:
Molecular Weight:
400.29
UNSPSC Code:
12352106
NACRES:
NA.22
MDL number:
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grade

reagent grade

Quality Level

assay

≥95.0%

impurities

8-10% water

mp

>300 °C (lit.)

functional group

sulfonic acid

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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pictograms

Exclamation mark

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable



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Global Trade Item Number

SKUGTIN
59828-50G04065267502793
59828-250G04065267502786
59828-10G04065267502779