Section 1 - CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

PRODUCT NAME

HEXAMETHYLENE DIISOCYANATE POLYMER, BLOCKED

NFPA

PRODUCT USE

Component of mixtures used as hardeners, curing agents for polyurethane coatings,
sealants. CONTAINS free organic isocyanate. Mixing and application requires special
precautions and use of personal protective gear [APMF]. Persons with a history of asthma
or other respiratory problems or are known to be sensitised, should not be engaged in any
work involving the handling of isocyanates. [CCTRADE- Bayer, APMF]. Requires that the two
parts be mixed by hand or mixer before use, in accordance with manufacturers directions.
Mix only as much as is required. Do not return the mixed material to the original
containers.

SYNONYMS

"Telomer B 2-carboxyethyl sulfide", "Telomer B 2-carboxyethyl sulfide", "1, 3, 5-tris(6-
isocyanatohexyl)-1, 3, 5-triazine-2, 4, 6(1H, 3, 5H)trionereaction products with 3, 5-
dimethyl-1H-pyrazole", "1, 3, 5-tris(6-isocyanatohexyl)-1, 3, 5-triazine-2, 4, 6(1H, 3,
5H)trionereaction products with 3, 5-dimethyl-1H-pyrazole"

Section 2 - HAZARDS IDENTIFICATION

CANADIAN WHMIS SYMBOLS

EMERGENCY OVERVIEW

RISK

Harmful by inhalation.
May cause SENSITIZATION by inhalation and skin contact.

POTENTIAL HEALTH EFFECTS

ACUTE HEALTH EFFECTS

SWALLOWED

  Although ingestion is not thought to produce harmful effects, the material may still be damaging to the health of the individual following ingestion, especially where pre-  existing organ (e.g. liver, kidney) damage is evident. Present definitions of harmful or toxic substances are generally based on doses producing mortality (death) rather than those producing morbidity (disease, ill-health). Gastrointestinal tract discomfort may produce nausea and vomiting. In an occupational setting however, ingestion of insignificant quantities is not thought to be cause for concern.  Considered an unlikely route of entry in commercial/industrial environments.  

EYE

  Although the material is not thought to be an irritant, direct contact with the eye may produce transient discomfort characterized by tearing or conjunctival redness (as with windburn).  The dust may produce eye discomfort causing smarting, pain and redness.  

SKIN

  The material is not thought to produce adverse health effects or skin irritation following contact (as classified using animal models). Nevertheless, good hygiene practice requires that exposure be kept to a minimum and that suitable gloves be used in an occupational setting.  

INHALED

  The material is not thought to produce respiratory irritation (as classified using animal models). Nevertheless inhalation of the material, especially for prolonged periods, may produce respiratory discomfort and occasionally, distress.  Respiratory sensitization may result in allergic/asthma like responses; from coughing and minor breathing difficulties to bronchitis with wheezing, gasping.  

CHRONIC HEALTH EFFECTS

  Inhaling this product is more likely to cause a sensitization reaction in some persons compared to the general population.  Skin contact with the material is more likely to cause a sensitization reaction in some persons compared to the general population.  

  Principal routes of exposure are by accidental skin and eye contact andinhalation of generated dusts.  The polymer this material contains and its functional group is of low concern. Blocked isocyanates have a group attached to them to reduce their reactivity compared to the unblocked version which is much more reactive.