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Merck
CN

71625

Sodium arsenate dibasic heptahydrate

puriss. p.a., ACS reagent, ≥98.5% (RT)

Synonym(s):

Disodium hydrogen arsenate heptahydrate, di-Sodium hydrogen arsenate heptahydrate

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About This Item

Linear Formula:
Na2HAsO4 · 7H2O
CAS Number:
Molecular Weight:
312.01
UNSPSC Code:
12352300
PubChem Substance ID:
MDL number:
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grade

ACS reagent, puriss. p.a.

assay

≥98.5% (RT)

impurities

≤0.01% arsenic trioxide

pH

8.5-9.0 (50 mg/mL in H2O, hot)

anion traces

chloride (Cl-): ≤10 mg/kg, nitrate (NO3-): ≤20 mg/kg, sulfate (SO42-): ≤50 mg/kg

cation traces

Ca: ≤20 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg

SMILES string

O.O.O.O.O.O.O.[Na+].[Na+].O[As]([O-])([O-])=O

InChI

1S/AsH3O4.2Na.7H2O/c2-1(3,4)5;;;;;;;;;/h(H3,2,3,4,5);;;7*1H2/q;2*+1;;;;;;;/p-2

InChI key

KOLXPEJIBITWIQ-UHFFFAOYSA-L



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Danger

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1A

Storage Class

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Regulatory Information

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Shugo Suzuki et al.
Toxicology, 299(2-3), 155-159 (2012-06-06)
Inorganic arsenic is a known human carcinogen, inducing tumors of the skin, urinary bladder and lung. It is metabolized to organic methylated arsenicals. 2,3-Dimercaptopropane-1-sulfonic acid (DMPS), a chelating agent, is capable of reducing pentavalent arsenicals to the trivalent state and
Dae Hyun Baek et al.
Journal of applied toxicology : JAT, 32(8), 617-626 (2011-12-02)
The embryonic stem cell test (EST) is a validated in vitro embryotoxicity test; however, as the inhibition of cardiac differentiation alone is used as a differentiation endpoint in the EST, it may not be a useful test to screen embryotoxic
M Sri Lakshmi Sunita et al.
Ecotoxicology (London, England), 21(1), 202-212 (2011-09-01)
In the present study, 44 arsenic-resistant bacteria were isolated through serial dilutions on agar plate with concentrations ≥0.05 mM of sodium arsenite and ≥10 mM of sodium arsenate from Mandovi and Zuari--estuarine water systems. The ars genotype characterization in 36



Global Trade Item Number

SKUGTIN
V5754-25MG04061837481154
V5754-100MG04061837481130
V5754-10MG04061837481147
676950-5MG04055977260588
676950-5MG-M04055977260588