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226017

1,2-Naphthoquinone-4-sulfonic acid sodium salt

97%

Synonym(s):

3,4-Dihydro-3,4-dioxo-1-naphthalenesulfonic acid sodium salt, Folin’s reagent, Sodium 1,2-naphthoquinone-4-sulfonate

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About This Item

Empirical Formula (Hill Notation):
C10H5NaO5S
CAS Number:
521-24-4
Molecular Weight:
260.20
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
24853538
EC Number:
208-308-9
Beilstein/REAXYS Number:
4169788
MDL number:
MFCD00001700
Assay:
97%
Form:
powder
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Quality Segment

100

assay

97%

form

powder

mp

289 °C (dec.) (lit.)

solubility

alcohol: slightly soluble 95%, acetone: moderately soluble(lit.), benzene: insoluble(lit.), carbon disulfide: insoluble(lit.), chloroform: insoluble(lit.), diethyl ether: insoluble(lit.), petroleum ether: insoluble(lit.), water: soluble(lit.)

functional group

ketone, sulfonic acid

SMILES string

[Na+].[O-]S(=O)(=O)C1=CC(=O)C(=O)c2ccccc12

InChI

1S/C10H6O5S.Na/c11-8-5-9(16(13,14)15)6-3-1-2-4-7(6)10(8)12;/h1-5H,(H,13,14,15);/q;+1/p-1

InChI key

UBLXEEBHYISRFM-UHFFFAOYSA-M

Application

1,2-Naphthoquinone-4-sulfonic acid sodium salt (Folin′s reagent) was used in the colorimetric assay for determination of procaine hydrochloride in pharmaceutical preparations.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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