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Sodium cacodylate trihydrate

Name: Sodium cacodylate trihydrate
Brand: SIAL

≥98.0% (T), solid, purum. p.a.

Synonym(s):

Cacodylic acid sodium salt trihydrate, Dimethylarsinic acid sodium salt, Dimethylarsonic acid sodium salt

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About This Item

Linear Formula:

(CH₃)₂AsO₂Na · 3H₂O

CAS Number:

6131-99-3

Molecular Weight:

214.03

NACRES:

NA.21

PubChem Substance ID:

57647877

UNSPSC Code:

12352100

EC Number:

204-708-2

MDL number:

MFCD00149079

Beilstein/REAXYS Number:

3702348

Assay:

≥98.0% (T)

Form:

solid

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Properties

Product Name

Sodium cacodylate trihydrate, purum p.a., ≥98.0% (T)

grade

purum p.a.

Quality Segment

200

assay

≥98.0% (T)

form

solid

anion traces

chloride (Cl^-): ≤100 mg/kg, sulfate (SO₄^2-): ≤200 mg/kg

cation traces

Ca: ≤100 mg/kg, Cd: ≤50 mg/kg, Co: ≤50 mg/kg, Cu: ≤50 mg/kg, Fe: ≤50 mg/kg, K: ≤500 mg/kg, Ni: ≤50 mg/kg, Pb: ≤50 mg/kg, Zn: ≤50 mg/kg

SMILES string

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

InChI

1S/C2H7AsO2.Na.3H2O/c1-3(2,4)5;;;;/h1-2H3,(H,4,5);;3*1H2/q;+1;;;/p-1

InChI key

RLGWPHBPRCROJO-UHFFFAOYSA-M

Description

General description

Sodium cacodylate trihydrate is a biological buffer. Its crystals have been analyzed by single-crystal X-ray diffraction studies. Studies suggested its crystals exhibited two phases, viz. penta-μ-aqua-disodium(I) bis(dimethylarsenate), {[Na₂(H₂O)₅](C₂H₆AsO₂)₂}_n and di-μ-aqua-bis[triaquasodium(I)] bis(dimethylarsenate), [Na₂(H₂O)₈](C₂H₆AsO₂)₂.[1]

Application

Sodium cacodylate trihydrate may be employed as buffer to maintain pH 7.4 in electron microscopic studies.[2][3] It may be used to compose cacodylate buffer for use in electron microscopic studies.[4]

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This Item	C0250	C4945	71995
Sigma-Aldrich 20840 Sodium cacodylate trihydrate	Sigma-Aldrich C0250 Sodium cacodylate trihydrate	Sigma-Aldrich C4945 Sodium cacodylate trihydrate	Sigma-Aldrich 71995 Sodium tartrate dibasic dihydrate
form solid	form powder	form powder	form solid
assay ≥98.0% (T)	assay ≥98%	assay ≥98%	assay ≥98.0% (NT)
Quality Level 200	Quality Level 200	Quality Level 200	Quality Level 200
grade purum p.a.	grade -	grade -	grade purum p.a.
anion traces chloride (Cl^-): ≤100 mg/kg, sulfate (SO₄^2-): ≤200 mg/kg	anion traces -	anion traces chloride (Cl^-): ≤0.05%, sulfate (SO₄^2-): ≤0.05%	anion traces chloride (Cl^-): ≤50 mg/kg, sulfate (SO₄^2-): ≤50 mg/kg
cation traces Cd: ≤50 mg/kg, Cu: ≤50 mg/kg, K: ≤500 mg/kg, Pb: ≤50 mg/kg, Ca: ≤100 mg/kg, Fe: ≤50 mg/kg, Zn: ≤50 mg/kg, Co: ≤50 mg/kg	cation traces -	cation traces Al: ≤0.0005%, Ca: ≤0.001%, Cu: ≤0.0005%, Fe: ≤0.0005%, K: ≤0.05%, Mg: ≤0.0005%, NH₄⁺: ≤0.05%, Pb: ≤0.001%, Zn: ≤0.0005%	cation traces Ca: ≤100 mg/kg, Cd: ≤50 mg/kg, Co: ≤50 mg/kg, Cu: ≤50 mg/kg, Fe: ≤50 mg/kg, K: ≤200 mg/kg, Ni: ≤50 mg/kg, Pb: ≤50 mg/kg, Zn: ≤50 mg/kg

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pictograms

GHS06,GHS08,GHS09

signalword

Danger

hcodes

H301 + H331,H350,H410

pcodes

P202 - P261 - P264 - P273 - P301 + P310 - P304 + P340 + P311

Hazard Classifications

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

Storage Class

6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 3

ppe

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges

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