Phenidone A - 10g
£8.95
Phenidone A, also known as 1-phenyl-3-pyrazolidinone, is a powerful soft-working developing agent. It is considered to be one of the least harmful developing agents to humans and is super-additive with pyrogallol, catechol, ascorbate derivatives and hydroquinone.
It can be sometimes substituted for metol in formulae when metol is not the sole developing agent. The starting substitution rate is 1 gram of phenidone for every 10 grams of metol.
Quantity:
Pyrogallol - 100g
£69.95
Ascorbic Acid - 50g
£4.95
It is readily soluble in warm aqueous acidic or basic solutions. It is recommended for best long term storage to dissolve into propylene glycol for a 5% solution which in turn will also make it easier to measure small quantities of phenidone.
