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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 Quantity
45-20840-25G-F 25 g
 $114.00
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45-20840-100G-F 100 g
 $242.00
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45-20840-500G-F 500 g
 $825.00
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anion traces chloride (Cl-): ≤100 mg/kg
  sulfate (SO42-): ≤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.
Purity ≥98.0% (T)
UNSPSC 12352100

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