Think you are wrong... on that point and there are many sources out there for you to check.
If you check the MSDS it list:
Charcoal
Potassium Nitrate
Potassium Perculate
Graphite
Charcoal for the smoke and Graphite for the color. And unless Hodgdon filed an incorrect MSDS - Charcoal is charcoal.
Potassium nitrate is a
chemical compound with the
formula KNO3. It occurs as a mineral
niter and is a natural solid source of
nitrogen. Its common names include
saltpetre (
saltpeter in American English), from Medieval Latin
sal petrę: "stone salt" or possibly "Salt of
Petra" and
nitrate of potash.
Potassium perchlorate is the inorganic
salt with the chemical formula
KClO4. Like other
perchlorates, this salt is a strong
oxidizer and potentially reacts with many organic substances. This usually obtained as a colorless, crystalline solid is a common oxidizer used in
fireworks,
ammunition percussion caps,
explosive primers, and is used variously in
propellants,
flash compositions, stars, and
sparklers.
Charcoal is the dark grey residue consisting of impure
carbon obtained by removing water and other volatile constituents from
animal and
vegetation substances.
Sugar based powders use Ascorbic Acid. There is no ascorbic acid in any of the T7 products.
Ascorbic acid is a
reductone sugar acid with
antioxidant properties. Its appearance is white to light-yellow crystals or powder, and it is water-soluble.