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Merck
CN

21-3140

1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt hydrate

JIS special grade

Synonym(s):

3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid disodium salt, Nitroso-R salt, Nitroso-R-salt

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About This Item

Linear Formula:
ONC10H4(OH)(SO3Na)2 · xH2O
CAS Number:
525-05-3
Molecular Weight:
377.26 (anhydrous basis)
EC Number:
208-369-1
UNSPSC Code:
12352300
PubChem Substance ID:
329752139
Beilstein/REAXYS Number:
3643930
MDL number:
MFCD00149246
Grade:
JIS special grade
Form:
powder

Key Documents

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InChI key

RDFCJJHALFWNIG-UHFFFAOYSA-L

InChI

1S/C10H7NO8S2.2Na.H2O/c12-10-8(21(17,18)19)4-5-3-6(20(14,15)16)1-2-7(5)9(10)11-13;;;/h1-4,12H,(H,14,15,16)(H,17,18,19);;;1H2/q;2*+1;/p-2

SMILES string

O.[Na+].[Na+].Oc1c(cc2cc(ccc2c1N=O)S([O-])(=O)=O)S([O-])(=O)=O

grade

JIS special grade

form

powder

availability

available only in Japan

mp

>300 °C (lit.)

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

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
U3127

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Jacob P Thyssen et al.
Contact dermatitis, 63(2), 63-69 (2010-06-25)
It is often difficult to establish clinical relevance of metal exposure in cobalt-allergic patients. Dermatologists and patients may incorrectly assume that many metallic items release cobalt at levels that may cause cobalt dermatitis. Cobalt-allergic patients may be unaware that they
Erdal Kendüzler et al.
Annali di chimica, 95(1-2), 77-85 (2005-04-02)
A procedure for the determination of trace amount of cadmium after adsorption of its 1-nitroso-2-naphthol-3,6-disulfonic acid chelate on Ambersorb 572 has been proposed. This chelate is adsorbed on the adsorbent in the pH range 3-8 from large volumes of aqueous
M Callens et al.
The Biochemical journal, 250(1), 285-290 (1988-02-15)
The binding of two activating cations, Co2+ and Mg2+, and of one inhibitory cation, Ca2+, to D-xylose isomerase from Streptomyces violaceoruber was investigated. Equilibrium-dialysis and spectrometric studies revealed that the enzyme binds 2 mol of Co2+/mol of monomer. Difference absorption
M Hoshi et al.
Radioisotopes, 34(4), 201-206 (1985-04-01)
A substoichiometric extraction method with nitroso-R salt (NRS) has been studied for the determination of trace Co in crud. The Co-NRS complex is extracted substoichiometrically into Capriquat-CHCl3 at pH 6.5-9.0 in 20 min of shaking time. The analytical results obtained
J Miura et al.
The Analyst, 115(9), 1191-1195 (1990-09-01)
The solid ion-pair material produced from the reaction between benzyldimethyltetradecylammonium chloride (BDTA) and sodium perchlorate on naphthalene provides the basis for a simple, rapid and selective technique for pre-concentrating iron from up to 500 ml of aqueous solution. Iron reacts

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