General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB/T 19940-2005
Scope
This standard specifies the method for the determination of hexavalent chromium ion content in powdered chrome tanning agents. This standard applies to sodium dichromate as raw material, acidified with sulfuric acid, etc., reduced by glucose or sulfur dioxide (SO2), or mixed with auxiliary agents, suitable for main tanning or retanning in tanning. Powdered chrome tanning agent.
GB/T 19940-2005 history
2005GB/T 19940-2005 Chrome powder.Determination of chromium(VI)