Pigments SynthesesFísica i Química 4t ESO

Science 3r ESO

Natural Pigments - RED

BEETROOT BETANIN

Cooked in water

Natural Pigments - GREEN

PARSLEY CHLOROPHYL A

Extracted in alcohol

Natural Pigments - ORANGE

CARROTS

BETA CAROTENE

Extracted in alcohol

Inorganic Pigments - BLUE

Cu SO4 + Na2 CO3

Cu CO3 · Cu (OH)2

sopper sulfate

sodium carbonate

basic copper carbonate

MALACHITE

Uses: pigments, algaecide in farm ponds and in aquaculture operations, …

zinc cromate

potassium cromate

zinc chloride

Inorganic Pigments - YELLOW

K2 CrO4 + Zn Cl2

Zn CrO4

Uses: paint coating planes and cars, spray paints, pigments in varnishes, …

Inorganic Pigments - WHITE

barium sulfate

sodium sulfate

barium chloride

Na2 SO4 + Ba Cl2

Ba SO4

Uses: drilling fluids, paper brightener, pigment, plastics filler, …