Section 2 : Hazardous Ingredients

WHMIS: What You Need to Know

11. The Material Safety Data Sheets (MSDSs)

SECTION 2

HAZARDOUS INGREDIENTS

INGREDIENTS        AMOUNT       CAS/PIN NUMBER     
Acetone            100%         67641/1090       

_____________________________________________________________________________
PERMISSIBLE EXPOSURE LIMITS         LD50 SPECIES       LC50 SPECIES
                                     &  ROUTE         &  ROUTE
________________________________________________________________________________
TWA = 750 ppm                         7.4 g/kg          not determined
                                     rat, oral 

STEV = 1000 ppm                       20 g/kg
                                     Rabbit, skin
_________________________________________________________________________________ 

All potentially hazardous ingredients of the material and the approximate amount (percent) of each ingredient of the material must be listed in this section. When a material contains ingredients that are registered as a trade secret, a registration number assigned by the Hazardous Materials Information Review Commission will appear in place of the ingredients. In the event of a medical emergency the company must disclose the identity of the ingredients to a medical professsional.

For acetone, the time-weighted average exposure value (TWAEV - 8 hr work day or 40 hr work week) of 750 ppm and the short-term exposure value (STEV - 15 min period) of 1000 ppm should not be exceeded. Preventive measures must be taken to reduce exposures to as low a level as is reasonable achievable.

Animal data (LD50 and LC50)) indicates that acetone is a compound of relatively low toxicity.

The CAS registry number, for acetone is 67641, This is a number assigned to to each chemical by the Chemical Abstracts Service (CAS) to provide a single unique identifier. A unique identifier is necessary because prooducts with the same chemical make-up can have many different names..

The product identification number (PIN)) for acetone is 1090. The PIN is used in Canada by fire fighters and other emergency response personnel for identification of materials during transportation.