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Home >> Inorganic Chemistry Dictionary >> China clay, Kaolin, Chrome iron ore
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Chemistry
the study of the composition of substances and the way their properties are related to their composition.
China clay, kaolin
a white powdery material arising from the decomposition of feldspars in granites. The clay is washed out with water and purified by settling. Used in paper and pottery manufacture and as a filler in textiles and paint.
Chromatogram
it is a volume/speed curve which illustrates a chromatographic separation. The concentration of component is found to be proportional to the signal. The signal illustrates the progress of a chromatographic separation.
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Chiral
having the property of chirality. For example, lactic acid is a chiral compound because it has two possible structures that cannot be superposed.
Chlorate
CIO3-, A negative ion derived from chloric acid. 2. A salt of chloric acid.
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Chloric acid
HCIO3, a compound that exists only in solution and as chlorate salts; break down at 40°C.
Chlorination
1. a chemical reaction in which a chlorine atom is introduced into a compound. 2. the treatment of water with chlorine to distinfect it.
Chloroplatinic acid
H2PtCl6, an acid obtained as red-brown deliquescent crystals; used in chemical analysis. Also known as platonic chloride.
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Chlorine
a greenish yellowish gas. It is used in bleaching cotton, linen, wood pulp paper etc. It is also used in plastics (e.g. PVC), manufacture of drugs, antiseptics, insecticides, anaesthetics, refrigerants.
Chlorine dioxide (CIO2)
an orange gas used as a powerful oxidizing agent.
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Chloropicrin
CCI3NO2, a colourless liquid with a sweet odour whose vapours is very irritating to the lungs and causes vomiting, coughing, and crying; used as a soil fumigant. Also known as nitrochloroform; trichloronitro methane.
Chloroplatinate
1. a double salt of platonic chloride and another chloride. 2. a salt of chloroplatinic acid. Also, know as platinochloride.
Chromic compounds
compounds having chromium in a higher (+3 or +6) oxidation state; e.g., chromic oxide is chromium (VI) oxide (CrO)3.
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Chlorosulphonic acid
CISO2OH, a fuming liquid that decomposes in water to sulphuric acid and hydrochloric acid; used in pharmaceuticals, pesticides, and dyes, and as a chemical intermediate. Also known as chlorosulphuric acid; sulfuric chlorohydrin.
chondrodite, 2Mg2SiO4.Mg(OH)2 chondrodite gives its name to a series of silicates containing discrete SiO44- ions. Other chondrodite minerals are norbergite Mg2SiO4, Mg(OH)2, humite 3Mg2SiO4, Mg(OH)2 and clinohumite 4Mg2SiO4, Mg(OH)2. Fluoride can replace hydroxyl.
Chrome alum
KCr(SO4)2, 12H2O, a typical alum used as a gelatin hardener.
Chrome iron ore.
a mixed iron-chromium oxide, FeO.Cr2O3, used to make ferrochromium for chromium steels.
Chrome yellow
lead chromate, PbCrO4, used as a pigment.
Chromic acid
a hypothetical acid, H2CrO4, known only in chromate salts.
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