The plastic used in making pipes

Glass-blowing is possible with 

An example for Auxochrome is

Substance added to cement clinkers to prolong the setting time is 

Glass is a mixture of Sodium silicate, Calcium silicate and

The following is an example for earthen ware

The primary nutrient is

An example for potassium fertilizer is 

In the manufacture of cement the kiln is maintained at this temperature

Drugs which act on blood circulation are