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4,4-Diphenylmethane diisocyanate (MDI) : safety practices and concentration during polyurethane foam spraying

 
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<title>4,4-Diphenylmethane diisocyanate (MDI)</title>
<subTitle> : safety practices and concentration during polyurethane foam spraying</subTitle>
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<namePart>Roberge, Brigitte</namePart>
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<namePart>Gravel, Rodrigue</namePart>
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<namePart>Droletm, Daniel</namePart>
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<publisher>IRSST</publisher>
<dateIssued>2009</dateIssued>
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<abstract displayLabel="Summary">In recent years, some Québec construction workers have been "sensitized" to 4,4'-diphenylmethane diisocyanate (MDI). This substance is emitted during spraying of a polyisocyanate (a mixture of MDI polymers) and a polyhydroxyl compound (resin) to form a rigid polyurethane foam used for thermal insulation in buildings. The permissible exposure value (PEV) for MDI (monomer form) in Québec is 0.051 mg/m3 (51 ?g/m3). This substance has been identified as a sensitizer (S) in the Regulation respecting occupational health and safety (RROHS) (Règlement sur la santé et la sécurité du travail RSST), which also mentions that the exposure should be kept at a minimum (ME).Field studies (on-site spraying) reported in the scientific literature have shown significant concentrations of MDI during this process, particularly in the residential construction sector.</abstract>
<note type="statement of responsibility">Brigitte Roberge, Rodrigue Gravel and Daniel Drolet</note>
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<topic>Sector de la construcción</topic>
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<topic>Aerosoles</topic>
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<topic>Aislamiento térmico</topic>
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<topic>Sustancias tóxicas y peligrosas</topic>
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<topic>Higiene industrial</topic>
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<title>Studies and research projects</title>
<partNumber>R-629</partNumber>
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<identifier type="isbn">978-2-89631-412-6</identifier>
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