配方类型:

COSMETICS AND DRUGS

配方说明:

Thioglycolate hair Wave Neutralizer

配方组成:

配制方法:

I---Raw Materials A 35% Hydrogen Peroxide.
B 85% C.P. phosphoric acid diluted with 9 volumes deionized water.
C De-ionized or distilled water.
D Phenacetin, solid.
E Wetting agent or opacifier as desired.
II---Preparation A Place 45 gal de-ionized water in the mix tank.
B In a separate container, boil 2-1/2 gal of de-ionized water and add 77-1/2 g phenacetin with stirring.
C When all the phenacetin is dissolved, add it to the mix tank with vigorous agitation.
D Add 35 g ethylene diamine tetra-acetic acid.
E Continue agitation and add 17 lb 13 oz of 35% hydrogen peroxide.
F Add 4 lb NH4H2PO4 (buffer).
G Add dilute phosphoric acid until a pH of 2.8-3.0 is reached.
H Bottle immediately and maintain scrupulous cleanliness throughout.
Accidental contamination in preparation of peroxide neutralizer will have an adverse effect on its stability. It is, therefore, recommended that the following precautions be taken: A covered or closed tank is advisable