# The Environmental Authorisations (Scotland) Regulations 2018, Paragraph 47


The carrying out of any activity involving the use in any 12-month period of—
(a) 5 tonnes or more of diphenyl methane di-isocyanate or other di-isocyanate of lower volatility than toluene di-isocyanate,
(b) partly polymerised di-isocyanates or prepolymers containing 5 tonnes or more of di-isocyanate monomers, where the activity may result in a release into the air of such monomers.

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Source: https://www.legislation.gov.uk/ssi/2018/219/schedule/26/part/3/paragraph/47 (the official version)
Page: https://openlegislation.uk/environmental-authorisations-scotland-regulations-2018/schedule-26/part-3/paragraph-47
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.