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In its uncured state, silicone rubber is a highly adhesive gel or liquid. To convert it to a solid, it must be cured, vulcanized, or catalyzed.This is normally carried out in a two-stage process at the point of manufacture into the desired shape, and then in a prolonged post-cure process.
The lakes of these colorings are also permitted except the lake of Red No. 3. [40] FD&C Blue No. 1 – Brilliant blue FCF, E133 (blue shade) FD&C Blue No. 2 – Indigotine, E132 (indigo shade) FD&C Green No. 3 – Fast green FCF, E143 (turquoise shade) FD&C Red No. 3 [a] – Erythrosine, E127 (pink shade, commonly used in glacé cherries) [41]
Patent Blue V, also called Food Blue 5, Sulphan Blue, Acid Blue 3, L-Blau 3, C-Blau 20, Patentblau V, Sky Blue, or C.I. 42051, is a sky blue synthetic triphenylmethane dye used as a food coloring. [1] As a food additive, it has E number E131.
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The majority of pre-packaged foods are required to list all ingredients, including all food additives such as color; however section B.01.010 (3)(b) of the Regulations provide food manufacturers with the choice of declaring added color(s) by either their common name or simply as "colour".
Silicone caulk can be used as a basic sealant against water and air penetration. In organosilicon and polymer chemistry, a silicone or polysiloxane is a polymer composed of repeating units of siloxane (−O−R 2 Si−O−SiR 2 −, where R = organic group). They are typically colorless oils or rubber-like substances. Silicones are used in ...
A lake pigment is a pigment made by precipitating a dye with an inert binder, or mordant, usually a metallic salt. Lake pigments are largely chemically organic. [1] Manufacturers and suppliers to artists and industry frequently omit the lake designation in the name. Many lake pigments are fugitive because the dyes involved are not lightfast.
The most common synthetic food coloring today is Allura Red AC, a red azo dye that goes by several names including: Allura Red, Food Red 17, C.I. 16035, FD&C Red 40, [25] [26] It was originally manufactured from coal tar, but now is mostly made from petroleum. [27] In Europe, Allura Red AC is not recommended for consumption by children.