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1,6-Hexamethylene diisocyanate homopolymer
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General Description
    Synonyms: Hexamethylene Diisocyanate Homopolymer; HDIH; Desmodur N3300; 1,6-Diisocyanato-Hexane Homopolymer; Poly(hexamethylene diisocyanate)

    OSHA IMIS Code Number: H130

    Chemical Abstracts Service (CAS) Registry Number: 28182-81-2

    Chemical Description and Physical Properties: thick liquid
      molecular formula: C24H36N6O6 (polyisocyanate)
      molecular weight: 504.6
      boiling point: 194°C
      vapor pressure: <10-7 kPa @ 20°C
Monitoring Methods used by OSHA
    Laboratory Sampling/Analytical Method:

    • sampling media: Glass Fiber Filter (37 mm open face) coated with 1.0 mg 1-(2-pyridyl)piperazine
      analytical solvent: (90:10) Acetonitrile:Dimethylsulfoxide
      maximum volume: 15 Liters   maximum flow rate: 1.0 L/min
      current analytical method: High Performance Liquid Chromatography; HPLC/UV/FLU
      method reference: OSHA Analytical Method (OSHA PV2125)
      method classification: Partially Validated
      note: OSHA personnel may obtain filters from SLTC. Keep filters refrigerated until use. Results may not reflect accurate exposures to the polymeric forms of isocyanates.

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