Winokur #28

Composition

9  
Sulfur
6  
Aluminium (atom, spher, 120-325 mesh)
4  
Dextrin
3  
Aluminium (Flake, Dark, -325 mesh)
9  
Charcoal (airfloat)

Description

A delicate, fine grained, “off-white” glitter that produces small but symmetrical flashes of moderate density and delay. Slightly hygroscopic, but usable. Dark aluminium is added to solve problems with fallout and increase flash density. Substituting sodium oxalate for sodium bicarbonate results in a similar effect but noticeably less fallout. #28, 29, and 30 are all very similar.

Source: 
Mr. Robert Winokur