Tween-20 MSDS
Section 1: Chemical Product and Company Identification
Product Name: Tween-20
Catalog Codes: SLP1705, SLP3514
CAS#: 9005-64-5
RTECS: TR7400000
TSCA: TSCA 8(b) inventory: Tween-20
CI#:
Not available.
Synonym:
TWEEN 20; Polyoxyethylene (20) sorbitan
monolaurate or Tween 20
Chemical Name: Tween-20
Chemical Formula: C58-H114-O26
Section 2: Composition and Information on Ingredients
Composition:
Name CAS # % by Weight
Tween-20 9005-64-5 100
Toxicological Data on Ingredients: Not applicable.
Section 3: Hazards Identification
Potential Acute Health Effects: Slightly hazardous in case of skin contact (irritant), of eye contact (irritant), of ingestion, of
inhalation.
Potential Chronic Health Effects:
CARCINOGENIC EFFECTS: Not available. MUTAGENIC EFFECTS: Not available. TERATOGENIC EFFECTS: Not available.
DEVELOPMENTAL TOXICITY: Not available. Repeated or prolonged exposure is not known to aggravate medical condition.
Section 4: First Aid Measures
Eye Contact:
Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at least 15
minutes. Get medical attention if irritation occurs.
Skin Contact:
Serious Skin Contact: Not available.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical
attention.
Serious Inhalation: Not available.
Ingestion:
Do NOT induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious
person. Loosen tight clothing such as a collar, tie, belt or waistband. Get medical attention if symptoms appear.
Serious Ingestion: Not available.
Section 5: Fire and Explosion Data
Flammability of the Product: May be combustible at high temperature.
Auto-Ignition Temperature: Not available.
Flash Points: CLOSED CUP: >148.89°C (300°F).
Flammable Limits: Not available.
Products of Combustion: These products are carbon oxides (CO, CO2).
Fire Hazards in Presence of Various Substances:
Slightly flammable to flammable in presence of open flames and sparks, of heat. Non-flammable in presence of shocks.
Explosion Hazards in Presence of Various Substances:
Risks of explosion of the product in presence of mechanical impact: Not available. Risks of explosion of the product in
presence of static discharge: Not available.
Fire Fighting Media and Instructions:
SMALL FIRE: Use DRY chemical powder. LARGE FIRE: Use water spray, fog or foam. Do not use water jet.
Special Remarks on Fire Hazards: Not available.
Special Remarks on Explosion Hazards: Not available.
Section 6: Accidental Release Measures
Small Spill: Absorb with an inert material and put the spilled material in an appropriate waste disposal.
Large Spill:
Absorb with an inert material and put the spilled material in an appropriate waste disposal. Finish cleaning by spreading water
on the contaminated surface and allow to evacuate through the sanitary system.
Section 7: Handling and Storage
Precautions:
Keep away from heat. Keep away from sources of ignition. Empty containers pose a fire risk, evaporate the residue under a
fume hood. Ground all equipment containing material. Do not ingest. Do not breathe gas/fumes/ vapor/spray. If ingested, seek
medical advice immediately and show the container or the label. Keep away from incompatibles such as oxidizing agents.
Storage: Keep container tightly closed. Keep container in a cool, well-ventilated area.
Section 8: Exposure Controls/Personal Protection
Engineering Controls:
Provide exhaust ventilation or other engineering controls to keep the airborne concentrations of vapors below their respective
threshold limit value. Ensure that eyewash stations and safety showers are proximal to the work-station location.
Personal Protection: Safety glasses. Lab coat.
Personal Protection in Case of a Large Spill:
Splash goggles. Full suit. Boots. Gloves. Suggested protective clothing might not be sufficient; consult a specialist BEFORE
handling this product.
Exposure Limits: Not available.
Section 9: Physical and Chemical Properties
Physical state and appearance: Liquid.
Odor: Not available.
Taste: Not available.
Molecular Weight: 1227.72 g/mole
Color: Yellow.
pH (1% soln/water): Not available.
Boiling Point: >100°C (212°F)
Melting Point: Not available.
Critical Temperature: Not available.
Specific Gravity: 1.1 (Water = 1)
Vapor Pressure: <0.1 kPa (@ 20°C)
Vapor Density: Not available.
Volatility: Not available.
Odor Threshold: Not available.
Water/Oil Dist. Coeff.: Not available.
Ionicity (in Water): Non-ionic.
Dispersion Properties: See solubility in water, methanol.
Solubility:
Soluble in cold water, methanol. Soluble in Isopropanol. Tween-20 isdispersible in Cottonseed oil, Ethylene Glycol, and
Propylene Glycol; Insoluble in Mineral Oil.
Section 10: Stability and Reactivity Data
Stability: The product is stable.
Instability Temperature: Not available.
Conditions of Instability: Excess heat (elevated temperatures), incompatible materials
Incompatibility with various substances: Reactive with oxidizing agents.
Corrosivity: Non-corrosive in presence of glass.
Special Remarks on Reactivity: Not available.
Special Remarks on Corrosivity: Not available.
Polymerization: Will not occur.
Section 11: Toxicological Information
Routes of Entry: Absorbed through skin. Eye contact. Inhalation.
Toxicity to Animals: Acute oral toxicity (LD50): >33000 mg/kg [Mouse].
Chronic Effects on Humans: Not available.
Other Toxic Effects on Humans: Slightly hazardous in case of skin contact (irritant), of ingestion, of inhalation.
Special Remarks on Toxicity to Animals: LD50 [Rat] - Route: Oral; Dose : 36700 ul/kg
Special Remarks on Chronic Effects on Humans: May cause adverse reproductive effects (post-implantation mortality) and
birth defects based on animal data.
Special Remarks on other Toxic Effects on Humans:
Potential Health Effects: Skin: May cause mild irritation. Will probably not be absorbed through skin. Eyes: No irritation is
likely to develop following contact with human eyes. Inhalation: No irritation is expected to be associated witih inhalation of
this material. However, it may cause respiratory tract irritation. No toxic effects are known to be associated with inhalation of
this material. Ingestion: May cause gastrointestinal tract irritation with nausea, vomiting, diarrhea, and hypermotility. The most
notable effect observed at higher doses is diarrhea, an expected, non-specifc physiological effect associated with having large
quantities of a relatively slowly absorbed material in the gut. It may also affect liver, blood and urinary tract.
Section 12: Ecological Information
Ecotoxicity: Not available.
BOD5 and COD: Not available.
Products of Biodegradation:
Possibly hazardous short term degradation products are not likely. However, long term degradation products may arise.
Toxicity of the Products of Biodegradation: The product itself and its products of degradation are not toxic.
Special Remarks on the Products of Biodegradation: Not available.
Section 13: Disposal Considerations
Waste Disposal:
Waste must be disposed of in accordance with federal, state and local environmental control regulations.
Section 14: Transport Information
DOT Classification: Not a DOT controlled
material (
Identification: Not applicable.
Special Provisions for Transport: Not applicable.
Section 15: Other Regulatory Information
Federal and State Regulations: TSCA 8(b) inventory: Tween-20
Other Regulations: EINECS: This product is on the European Inventory of Existing Commercial Chemical Substances.
Other Classifications:
WHMIS (
DSCL (EEC):
This product is not classified according to the EU regulations. S24/25- Avoid contact with skin and eyes.
HMIS (
Health Hazard: 1
Fire Hazard: 1
Reactivity: 0
Personal Protection: a
National Fire Protection Association (
Health: 0
Flammability: 1
Reactivity: 0
Specific hazard:
Protective Equipment:
Not applicable. Lab coat. Not applicable. Safety glasses.
Section 16: Other Information
References: Not available.
Other Special Considerations: Not available.
Created: 10/10/2005 11:34 AM
Last Updated: 11/06/2008 12:00 PM