CAS 1332-09-8

Colour - From greyish-white to yellow and brown
Specific weight, g/cm3 - 0, 4-0, 6
Humidity, % - Not more than 6
Granule size, mm - 3-7
Fractional composition, %
- granule size 3-7 mm - Not less than 99, 9
- granule size less than 3 mm - no
Mass fraction of iron, % - Not more than 1.0
Specific surface, m2/g - 0, 5÷2, 0
Crushing strength, N - Not less than 40
Catalytic properties of SnP catalyst:
Yield of formaldehyde per methanol passed, % mol. - Not less than 70
Formaldehyde yield per decomposed methanol, % mol. - Not less than 85
- CO content in exhaust gas, % vol. - Not more than 1.5
- content in exhaust gas CO2, % vol. - Not more than 4.5
Chemical composition of the pumice (% of the dried at
110 degrees C), %:
SiO2 - 60-74
TiO2 + Al2O3 - 13-19
Fe2O3 - 1-5
MGO - up to 3
CaO - 1-4
R2O - 3-9