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:
Molecular Weight:
377.26 (anhydrous basis)
EC Number:
208-369-1
UNSPSC Code:
12352300
PubChem Substance ID:
Beilstein/REAXYS Number:
3643930
MDL number:
Grade:
JIS special grade
Form:
powder
grade
JIS special grade
form
powder
availability
available only in Japan
mp
>300 °C (lit.)
SMILES string
O.[Na+].[Na+].Oc1c(cc2cc(ccc2c1N=O)S([O-])(=O)=O)S([O-])(=O)=O
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
InChI key
RDFCJJHALFWNIG-UHFFFAOYSA-L
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
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2
Regulatory Information
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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
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
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