Sodium acetate trihydrate Buffer

Synonyms: Acetic acid sodium salt trihydrate
C₂H₃NaO₂ • 3H₂O
CH₃COONa • 3H₂O
M_r 136.08
CAS Number [6131-90-4]
EC Number 204-823-8
Merck 14,8571
Beilstein Registry Number 3732037
RTECS AJ4580000
MDL Number MFCD00071557
Purity ≥ 99.5%
pKa = 4.8

The useful pH range of a Sodium acetate trihydrate buffer is pH 3.6 - 5.6.

Titrate HR2-569 to the desired pH using HCl
HR2-569 Measured pH Range: 8.7 - 9.3 at 25°C
HR2-569 Measured Conductivity Range: 48.0 - 51.7 mS/cm at 25°C
HR2-569 Measured Refractive Index Range: 1.34392 - 1.34415 at 20°C

HR2-789 has been titrated to pH 4.5 using HCl
HR2-789 Measured Conductivity Range: 60.8 - 67.7 mS/cm at 25°C
HR2-789 Measured Refractive Index Range: 1.34530 - 1.34579 at 20°C

HR2-731 has been titrated to pH 4.6 using HCl
HR2-731 Measured Conductivity Range: 59.3 - 64.5 mS/cm at 25°C
HR2-731 Measured Refractive Index Range: 1.34535 - 1.345745 at 20°C

Al  ≤0.0005%
As ≤0.00001%
Bi  ≤0.0005%
Ca ≤0.001%
Cd ≤0.0005%
Cl  ≤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%
PO₄ ≤0.0005%
SO₄ ≤0.002%
Sr  ≤0.0005%
Zn  ≤0.0005%