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Sigma-Aldrich

3-Hydroxynaphthalene-2,7-disulfonic acid disodium salt

technical, ≥95% (HPLC)

Synonym(s):

Disodium 3-hydroxy-2,7-naphthalenedisulfonate, R-Acid sodium salt

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About This Item

Empirical Formula (Hill Notation):
C10H6Na2O7S2
CAS Number:
135-51-3
Molecular Weight:
348.26
Beilstein:
3643184
EC Number:
205-196-3
MDL number:
MFCD00065915
UNSPSC Code:
12352100
PubChem Substance ID:
57652254

grade

technical

Quality Level

100

Assay

≥95% (HPLC)

form

powder

loss

≤2% loss on drying

SMILES string

[Na+].[Na+].Oc1cc2ccc(cc2cc1S([O-])(=O)=O)S([O-])(=O)=O

InChI

1S/C10H8O7S2.2Na/c11-9-4-6-1-2-8(18(12,13)14)3-7(6)5-10(9)19(15,16)17;;/h1-5,11H,(H,12,13,14)(H,15,16,17);;/q;2*+1/p-2

InChI key

VNEBWJSWMVTSHK-UHFFFAOYSA-L

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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M Gutman et al.
Biochemistry, 24(12), 2941-2946 (1985-06-04)
The kinetics of protonation of a specific site on a macromolecular structure (micelle) in buffered solution was studied with the purpose of evaluating the effect of buffer on the observed dynamics. The experimental system consisted of the following elements: Brij
M Gutman et al.
Biochemistry, 24(12), 2937-2941 (1985-06-04)
The laser-induced proton pulse generates a massive, brief, proton pulse capable of perturbing biochemical equilibria. The time resolution of the monitoring system can follow the diffusion-controlled protonation of specific sites on macromolecular bodies [Gutman, M. (1984) Methods Biochem. Anal. 30
M Gutman et al.
Journal of biochemical and biophysical methods, 1(1), 9-19 (1979-01-01)
The excited state (S1) of sulfononaphthols has a pK value well below that of the ground state, consequently intensive illumination of their aqueous solution should lead to acidification. In this study the second harmonies of a ruby laser pulse (10
Shuxin Liu et al.
Scientific reports, 7(1), 8150-8150 (2017-08-16)
Uremia has been a rapidly increasing health problem in China. Hemodialysis (HD) is the main renal replacement therapy for uremia. The results of large-scale clinical trials have shown that the HD pattern is crucial for long-term prognosis of maintenance hemodialysis
John J H Shin et al.
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Phosphoinositides, diacylglycerolpyrophosphate, ceramide-1-phosphate, and phosphatidic acid belong to a unique class of membrane signaling lipids that contain phosphomonoesters in their headgroups having pKa values in the physiological range. The phosphomonoester headgroup of phosphatidic acid enables this lipid to act as

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