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400424

Sigma-Aldrich

6-Hydroxy-2-naphthalenesulfonic acid sodium salt hydrate

technical grade

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About This Item

Linear Formula:
HOC10H6SO3Na · xH2O
Molecular Weight:
246.21 (anhydrous basis)
EC Number:
205-218-1
MDL number:
MFCD10565653
UNSPSC Code:
12352100
PubChem Substance ID:
24864916
NACRES:
NA.22
Pricing and availability is not currently available.

grade

technical grade

Quality Level

200

form

solid

mp

>300 °C (lit.)

functional group

sulfonic acid

SMILES string

O.[Na+].Oc1ccc2cc(ccc2c1)S([O-])(=O)=O

InChI

1S/C10H8O4S.Na.H2O/c11-9-3-1-8-6-10(15(12,13)14)4-2-7(8)5-9;;/h1-6,11H,(H,12,13,14);;1H2/q;+1;/p-1

InChI key

QHVRFNCHOMKXQP-UHFFFAOYSA-M

General description

Sodium salt of 6-hydroxy-2-naphthalenesulfonic acid is also referred as Schaeffer′s salt.[1]

Application

6-Hydroxy-2-naphthalenesulfonic acid sodium salt hydrate may be used in the following studies:
  • As precursors during the agar-plate screening test.[2]
  • Preparation of methoxy-substituted naphthalenesulfonyl chloride.[3]
  • Synthesis of FD&C Red No. 40, a synthetic water-soluble color that is permitted for coloring foods, drugs and cosmetics in the U.S.A.[1]

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCT9862
MKCQ3947
MKCQ2908
MKCN6136
MKCK3173

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Anamarija Zega et al.
Bioorganic & medicinal chemistry letters, 14(6), 1563-1567 (2004-03-10)
A series of azaphenylalanine derivatives were investigated as novel thrombin inhibitors based on the prodrug principle. By systematic structural modifications we have identified optimal groups for this series that led us to potent inhibitors of thrombin incorporating the benzamidine fragment
N Richfield-Fratz et al.
Journal of chromatography, 467(1), 167-176 (1989-04-21)
The unsulfonated aromatic amine 4-nitro-p-cresidine (2-methoxy-5-methyl-4-nitrobenzenamine) was identified as an impurity in the regulated color additive FD&C Red. No. 40. The compound was isolated from the water-soluble color by extraction with chloroform, followed by transfer of the free amines to
Jolanta Polak et al.
Microbial cell factories, 9, 51-51 (2010-07-06)
Chemical methods of producing dyes involve extreme temperatures and unsafe toxic compounds. Application of oxidizing enzymes obtained from fungal species, for example laccase, is an alternative to chemical synthesis of dyes. Laccase can be replaced by fungal biomass acting as

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