Includes blending or mixing.  Shall not be assigned to an employer that is engaged exclusively in the blending or mixing of chemicals.  The following is a partial list of the chemical manufacturing processes contemplated by this classification: alcoholysis, alkylation, amination, calcination, carboxylation, compression of gases, distillation, esterification, halogenation, nitration, oxidation, reduction, sulphonation.

Code 4829 or Code 4828 “Chemical Blending or Mixing – NOC – All Operations & Drivers,” Code 4611 “Drug, Medicine or Pharmaceutical Preparation – No Mfg. of Ingredients” and Code 4825 “Drug, Medicine or Pharmaceutical Preparation Mfg. – Includes Mfg. of Ingredients,” shall not be assigned to the same employer unless the operations described by these classifications are conducted as separate and distinct businesses.

Code 4829 applies to employers engaged in manufacturing products requiring a chemical conversion.  Chemical conversion is any process in which the substances used in the manufacturing process undergo a molecular change in composition.  This classification includes the manufacturing of chemical ingredients as well as the blending and mixing of the ingredients.  Depending on the type of chemical the employer manufactures, raw materials may be in the form of gas, liquid or in solid form such as crystals or powder.  There are several chemical processes that are used such as alcoholysis, alkylation, amination, calcination, carboxylation, compression of gases, distillation, esterification, halogenation, nitration, oxidation, reduction, sulphonation.