Section 1 - CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

PRODUCT NAME

ULTRASIL VN 3 POWDER

NFPA

PRODUCT USE

For use as a highly dispersed, reinforcing filler with various degrees of activity for
heavy duty bright rubber articles.

SYNONYMS

"precipitated silica colloidal silica fumed silica", "highly dispersed SiO2 active
silicas Zeosil 55 P"

Section 2 - HAZARDS IDENTIFICATION

CANADIAN WHMIS SYMBOLS

EMERGENCY OVERVIEW

RISK

Very toxic to aquatic organisms, may cause long- term adverse effects in the
aquatic environment.

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.  Not normally a hazard due to the physical form of product. The material is a physical irritant to the gastrointestinal tract.  

EYE

  There is some evidence to suggest that this material can causeeye irritation and damage in some persons.  Generated dust may be discomforting.  

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.  The material may cause skin irritation after prolonged or repeated exposure and may produce on contact skin redness, swelling, the production of vesicles, scaling and thickening of the skin.  

INHALED

  The material is not thought to produce adverse health effects or irritation of the respiratory tract (as classified using animal models). Nevertheless, good hygiene practice requires that exposure be kept to a minimum and that suitable control measures be used in an occupational setting.  Generated dust may be discomforting.  Persons with impaired respiratory function, airway diseases and conditions such as emphysema or chronic bronchitis, may incur further disability if excessive concentrations of particulate are inhaled.  

CHRONIC HEALTH EFFECTS

  Long term exposure to high dust concentrations may cause changes in lung function i.e. pneumoconiosis; caused by particles less than 0.5 micron penetrating and remaining in the lung. Prime symptom is breathlessness; lung shadows show on X-ray.  The synthetic, amorphous silicas are believed to represent a very greatly  reduced silicosis hazard compared to crystalline silicas.  Inhalation of dusts containing crystalline silicas may lead to silicosis,  a disabling pulmonary fibrosis that may take years to develop.  When heated to high temperature and for a long time, amorphous silica can  produce crystalline silica on cooling. Treat as a nuisance dust.