Sodium cacodylate trihydrate

SIAL/20840 - purum p.a., ≥98.0% (T)

Synonym: Cacodylic acid sodium salt trihydrate; Dimethylarsinic acid sodium salt; Dimethylarsonic acid sodium salt

CAS Number: 6131-99-3
Empirical Formula (Hill Notation): C₂H₆AsNaO₂ · 3H₂O
Molecular Weight: 214.03
EC Number: 204-708-2
MDL Number: MFCD00149079
Linear Formula: (CH₃)₂AsO₂Na · 3H₂O
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-20840-25G-F	25 g	$111.00 1/EA	Add To Favorites
45-20840-100G-F	100 g	$235.00 1/EA	Add To Favorites
45-20840-500G-F	500 g	$800.00 1/EA	Add To Favorites

Properties
Descriptions
Safety Info.
Basic Data

anion traces	chloride (Cl^-): ≤100 mg/kg
	sulfate (SO₄^2-): ≤200 mg/kg
assay	≥98.0% (T)
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
form	solid
grade	purum p.a.
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
Quality Level	200
SMILES string	[Na+].[H]O[H].[H]O[H].[H]O[H].C[As](C)([O-])=O

Application:	Sodium cacodylate trihydrate may be employed as buffer to maintain pH 7.4 in electron microscopic studies. It may be used to compose cacodylate buffer for use in electron microscopic studies.
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.

Symbol	GHS06,GHS08,GHS09
Signal word	Danger
Hazard statements	H301 + H331 - H350 - H410
Precautionary statements	P201 - P273 - P301 + P310 + P330 - P304 + P340 + P311
Hazard Codes	T,N
Risk Statements	23/25-40-50/53
Safety Statements	20/21-28-45-60-61
RIDADR	UN 1688 6.1 / PGII
WGK Germany	WGK 3

Purity	≥98.0% (T)
UNSPSC	12352100

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