Section 1 - CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

PRODUCT NAME

HEPTAMETHYLTRISILOXANE, ETHOXYLATE,PROPOXYLATE ALLYL ETHER

NFPA

PRODUCT USE

Wetting agent.

SYNONYMS

"poly(oxy-1, 2-ethanediyl), poly(methyl-1, 2-ethanediyl)alpha-methyl-omega-[3-[1, 3, 3,
3-tetramethyl-1-[(trimethylsilyl)oxy]disiloxanyl]allyl", "poly(oxy-1, 2-ethanediyl),
poly(methyl-1, 2-ethanediyl)alpha-methyl-omega-[3-[1, 3, 3, 3-tetramethyl-1-
[(trimethylsilyl)oxy]disiloxanyl]allyl", "polyethylene, polypropylene methyl3-[1, 3, 3,
3-tetramethyl-1-(trimethylsilyloxy)disiloxanyl]allyl ether", "polyethylene,
polypropylene methyl3-[1, 3, 3, 3-tetramethyl-1-(trimethylsilyloxy)disiloxanyl]allyl
ether", "heptamethyltrisiloxane, ethoxylated, propoxylated, allyl ether", "modified
heptamethyltrisiloxane", "polyalkyleneoxide modified heptamethyltrisiloxane",
oxyalkylenemethylsiloxane, "wetting agent/ penetrating fluid/ nonionic", "Silwet L-7280",
"Silwet L-7280"

Section 2 - HAZARDS IDENTIFICATION

CANADIAN WHMIS SYMBOLS

EMERGENCY OVERVIEW

RISK

Irritating to eyes.
Possible risk of impaired fertility.
Harmful to aquatic organisms.

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.  Ingestion may result in nausea, pain, vomiting. Vomit entering the lungs by aspiration may cause potentially lethal chemical pneumonitis.  Silicone fluids do not have a high acute toxicity. They may have a laxative effect and produce central nervous system depression. They have been known to reduce bloating and gas. Aspiration of silicone fluids can produce inflammation of the lungs.  

EYE

  This material can cause eye irritation and damage in some persons.  The material may produce severe irritation to the eye causing pronounced inflammation. Repeated or prolonged exposure to irritants may produce conjunctivitis.  

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.  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.  Low molecular weight silicone fluids may exhibit solvent action andmay produce skin irritation.  

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.  Not normally a hazard due to non-volatile nature of product.  Vapors of silicones are generally fairly well tolerated, however very high concentrations can cause death within minutes due to respiratory failure. At high temperatures, the fumes and oxidation products can be irritating and toxic and can cause depression leading to death in very high doses.  

CHRONIC HEALTH EFFECTS

  Ample evidence from experiments exists that there is a suspicionthis material directly reduces fertility.  

  Principal routes of exposure are by accidental skin and eye contact and by inhalation of vapors especially at higher temperatures.  The material may accumulate in the human body and progressively causetissue damage.  Subchronic feeding studies with a similar product, show that high dosage  repeated exposure may produce liver dysfunction, altered blood cytology/  chemistry and thyroid enlargement (primarily hypertrophy, and some  hyperplasia). Findings from a 14-day dietary feeding study with rats,  using a similar material, show that high dosage repeated ingestion of  the material causes adverse effects on the male and female reproductive  systems. Evidence of partial or complete recovery was found over a 28-day  period.  Possible risk of impaired fertility.  This material contains a polymer with a functional group considered to be of moderate concern. Allyl ethers are reactive and irritate the skin. Toxicity is lower for larger species because they are less easily absorbed by the body. However even large polymers with more than one medium-risk reactive group cannot be classified as a low risk polymer.