WHMIS (1,3-Butadiene)

Workplace Hazardous Materials Information System

WHMIS 2015 classification - Note to reader
Update: 2016-03-15

  • Flammable gases - Category 11
    • Lower flammable limit = 2,0 %
  • Gases under pressure - Liquefied gas2
  • Germ cell mutagenicity - Category 1B3
  • Carcinogenicity - Category 1A4

  • WHMIS 2015 pictogram : Flame

  • WHMIS 2015 pictogram : Gaz cylinder

  • WHMIS 2015 pictogram : Health hazard


Extremely flammable gas (H220)
Contains gas under pressure; may explode if heated (H280)
May cause genetic defects (H340)
May cause cancer (H350)

Ingredient disclosure

Comments1 5 6 : This product is generally commercialized with an inhibitor. Therefore, the health hazard classification could be different, according to the inhibitor used and its concentration. The physical hazard classification considers the product as inhibited. However, under certain conditions (e.g. depletion or absence of the inhibitor) a hazardous polymerisation may occur.


The [number] refers to the Information SST database of the CNESST Documentation Center.