Kunroku. Amber powder

This material is not yet popular in Japan, but the author was able to test it through the help of R.Lancaster. It is produced in Australia, and is cheaper than shellac. The burning rates comparing with shellac are as follows(Table 10).  

Oxidizer Burning rate Shellac(2 0%) Accroides resin( z 0%) Density 

The sample composition were charged in a powdered state. The quite significant nature of the accroides resin is that it burns quite well with potassium perchlorate in comparison with shellac. The burning rate of the accroides resin is generally larger than that of the shellac as seen in the table. This is quite good for chrysanthemum stars. 

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