C
SECTION C — CHEMISTRY AND METALLURGY
  
CHEMISTRY
 C05
MANUFACTURE OF FERTILISERS
 C05

Note(s)

An ingredient in a mixture of fertilisers, or a single fertiliser which contains more than one of the chemical elements on which the division into sub-classes is based, is classified only in the first of the appropriate sub-classes. Thus, a nitrophosphate or an ammoniated superphosphate is classified in C05B but not in C05C, magnesium phosphate is classified in C05B but not in C05D, and calcium cyanamide in C05C but not in C05D.

When classifying a mixture of different fertilisers, or fertilisers with non-fertilisers the symbols appropriate to each separate ingredient of the mixture should be shown after the symbol appropriate to the mixture, in the manner indicated in para. 61 of the Guide. For example a mixture of Thomas phosphate with an organic phosphatic fertiliser would bear symbols C05B 21/00 // C05B 5/00, C05B 15/00; a mixture of Thomas phosphate sodium nitrate, and a potassium compound, the symbol C05G 1/04 // C05B 5/00; C05C 5/02; C05D 1/00; a mixture of organic phosphatic fertiliser with phenol (as a pesticide) the symbols C05G 3/02 // C05B 15/00; A01N 9/26; and a mixture of urea-formaldehyde fertilising condensate with a particular alkyl sulphonate as wetting agent, the symbols C05G 3/06 // C05C 9/02; B01F 17/02. Insignificant amounts, e.g. of impurities in a fertiliser, are disregarded.

 C05B
PHOSPHATIC FERTILISERS
 C05B 1/00
Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulphuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
 C05B 1/02
·  Superphosphates
 C05B 1/04
·  Double-superphosphate; Triple-superphosphate; Other fertilisers based essentially on monocalcium phosphate
 C05B 1/06
·  Ammoniation of superphosphates (fertilisers based essentially on ammonium orthophosphate C05B 7/00)
 C05B 1/10
·  Apparatus for the manufacture of superphosphates
 C05B 3/00
Fertilisers based essentially on di-calcium phosphate (C05B 11/00 takes precedence)
 C05B 5/00
Thomas phosphate; Other slag phosphates
 C05B 7/00
Fertilisers based essentially on alkali or ammonium orthophosphates (C05B 11/00 takes precendence)
 C05B 9/00
Fertilisers based essentially on phosphates or double phosphates of magnesium (C05B 11/00 takes precedence)
 C05B 11/00
Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
 C05B 11/02
·  Pretreatment
 C05B 11/04
·  using mineral acid
 C05B 11/06
·  ·  using nitric acid (nitrophosphates)
 C05B 11/08
·  ·  using sulphuric acid
 C05B 11/10
·  ·  using orthophosphoric acid
 C05B 11/12
·  ·  using aqueous hydrochloric acid
 C05B 11/14
·  ·  using wet gaseous acids
 C05B 11/16
·  using alkaline lyes
 C05B 13/00
Fertilisers produced by pyrogenic processes from phosphatic materials
 C05B 13/02
·  from rock phosphates (C05B 13/06 takes precedence)
 C05B 13/04
·  from metallic phosphorus compounds, e.g. ferro-phosphorus
 C05B 13/06
·  Alkali and alkaline earth meta- or polyphosphate fertilisers
 C05B 15/00
Organic phosphatic fertilisers (bone meal C05B 17/00)
 C05B 17/00
Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
 C05B 17/02
·  containing manganese
 C05B 19/00
Granulation or pelletisation of phosphatic fertilisers other than slag (granulating apparatus B01J 2/00; granulating slag C04B)
 C05B 19/02
·  of superphosphates or mixtures containing them
 C05B 21/00
Mixtures of phosphatic fertilisers