H blowing agent is mainly used for rubber products and PVC plastic products as the vesicant. In the rubber, it is 3-5% in quantity and 5-15% in the plastics. It is a kind of light yellow powder with no odor, but there is formaldehyde flavor when it is moist. This product is inflammable and it can be inflammable in contact with acid or acid fog.

This product is hardly dissolved in ether, slightly dissolve in water, alcohol, and the chloroform. It can dissolve in acetone, butanone, acetyl, acetic acid, ethyl ester and dimethylformamide. Specifications: In accordance with ministerial standards: HG2-1188-78.