MOCA (CAS 101-14-4) is a light brown to colourless crystalline solid that has been primarily used as a curing agent for isocyanate-based polyurethane products.

Examples of work activities involving MOCA that require special attention when assessing exposure include:

  • dispensing MOCA powder
  • processes where spattering of MOCA in the dry or molten state occurs
  • manual moulding of semi-set polyurethane products

This guide provides information for those registered medical practitioners engaged by a PCBU to carry out or supervise health monitoring for workers. This guidance should be read in conjunction with the following:

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