EC number：914-129-3
Chemical composition: Basic chromium sulfate
Properties
? BAYCHROM? A is a powdered chrome sulfate tanning material for use in the BAYCHROM? process in which basification takes place automatically during the tanning process.
? Basification during the tanning process, which frequently leads to variations in the quality of the leather, can thus be omitted. The tannage with BAYCHROM? A is more reliable and guarantees constant quality in the manufacturing of leather. It is simple, economical and time saving.
? BAYCHROM? A is suitable for tanning all types of leather.
? The tannage with BAYCHROM? A results in good, uniform uptake of chrome. The leather produced in this way is characterized by a fine grain, good completeness and uniform dyeing properties.
Applications
? BAYCHROM? A must always be added in powdered form. The drums must have a hollow axle or another method of ventilation to prevent the formulation of overpressure, which can occur even during conventional basification in the tanning process.
? In the BAYCHROM? process, a float length of 40-80% has proven to be suitable. The amount of acid in the pickle should be calculated to ensure that the final pH of the tannage is between 3.5 and 3.8.
? The automatic basification occurring with the use of BAYCHROM? A is helped by a gradual increase in temperature from 20-25℃. in the pickle to 35-40℃ at the end of the tannage. Since no supervision is required, the chrome tannage can be left to take effect automatically in the evening and overnight.
? BAYCHROM? A is also suitable for the retannage of wet blue, where at 2-4% (based on shaved weight) is added into a short float
with a temperature of 40-50℃.
