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S7778 Sigma-Aldrich

Sodium phosphate tribasic dodecahydrate

BioXtra, ≥98.0% (titration)

Synonym: TSP, Trisodium phosphate (tert) dodecahydrate, Trisodium phosphate dodecahydrate

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Properties

Related Categories BioXtra Buffers, Biochemicals and Reagents, Biological Buffers, Buffer / Buffer Salts, Buffers A to Z,
Quality Level   200
product line   BioXtra
assay   ≥98.0% (titration)
form   powder
impurities   Insoluble matter, passes filter test
  ≤3% Free alkali (as NaOH)
pH   ~13.0 (20 °C, 0.5 M in water)
solubility   H2O: 0.5 M at 20 °C, clear, colorless
density   1.62 g/mL at 25 °C
anion traces   chloride (Cl-): ≤0.005%
  sulfate (SO42-): ≤0.005%
cation traces   Al: ≤0.0005%
  Ba: ≤0.0005%
  Bi: ≤0.0005%
  Ca: ≤0.001%
  Cd: ≤0.0005%
  Co: ≤0.0005%
  Cr: ≤0.0005%
  Cu: ≤0.0005%
  Fe: ≤0.0005%
  K: ≤0.005%
  Li: ≤0.0005%
  Mg: ≤0.0005%
  Mn: ≤0.0005%
  Mo: ≤0.0005%
  Ni: ≤0.0005%
  Pb: ≤0.0005%
  Sr: ≤0.0005%
  Zn: ≤0.0005%
absorption   ≤0.023 at 280 in H2O at 0.5 M
  ≤0.035 at 260 in H2O at 0.5 M
Featured Industry   Diagnostic Assay Manufacturing
SMILES string   O.O.O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[Na+].[O-]P([O-])([O-])=O
InChI   1S/3Na.H3O4P.12H2O/c;;;1-5(2,3)4;;;;;;;;;;;;/h;;;(H3,1,2,3,4);12*1H2/q3*+1;;;;;;;;;;;;;/p-3
InChI key   ASTWEMOBIXQPPV-UHFFFAOYSA-K
Safety & Documentation

Safety Information

Symbol 
GHS07  GHS07
Signal word 
Warning
Hazard statements 
Precautionary statements 
Target organs 
Respiratory system
RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 1
RTECS 
TC9575000
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles

Related Content

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A buffer, as defined by Van Slyke [1], is "a substance which by its presence in solution increases the amount of acid or alkali that must be added to cause unit change in pH". Buffers are thus very i...
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Peer-Reviewed Papers
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