Material Safety Data Sheet
Date Originated: 7/28/2004
Page: 1
HCS Risk Phrases
NFPA Protective Clothing
HCS CLASS: Toxic.
3
HCS CLASS: Irritating substance.
2 0 HCS CLASS: Target organ effects.
HCS CLASS: Flammable liquid having a flash point lower
than 37.8癈 (100癋).
Section 1. Chemical Product and Company Identification
Product Name Synonym
W41.0
MC-Thinner
Manufacturer Chemical Family
WASSER CORPORATION Not available (Paint thinner).
1004, West James St., Suite 100
Kent, WA
USA 98032
Tel: 1-800-627-2968
In case of Emergency
EMERGENCY PHONE NUMBERS:
USA and Canada: 1-800 424-9300
International: 1-703 527-3887
Section 2. Composition and Information on Ingredients
Name CAS # % by TLV/PEL LC50/LD50
Weight
Xylenes 60-100 TWA: 100 STEL: 150 (ppm) ORAL (LD50): Acute: 4300
1330-20-7
from OSHA (PEL) mg/kg [Rat]. DERMAL
(LD50): Acute: 2000 mg/kg
[Rabbit]. VAPOR (LC50):
Acute: 6700 ppm 4 hour(s)
[Rat].
Methyl isobutyl ketone 10-30 TWA: 50 STEL: 75 (ppm) ORAL (LD50): Acute: 2080
108-10-1
from ACGIH (TLV) mg/kg [Rat]. 2850 mg/kg
TWA: 50 STEL: 75 (ppm) [Mouse]. VAPOR (LC50):
from OSHA (PEL) Acute: 2000 ppm 4 hour(s)
[Rat].
Material Safety Data Sheet
MC-Thinner
Product Name:
Page: 2
Section 3. Hazards Identification
Inhalation. Skin contact (absorption). Eye contact. Ingestion.
Routes of Entry:
Potential Acute Health Effects
Eyes: Liquid or spray mist may irritate eyes. Over-exposure may cause severe irritation. Inflammation of the eye
is characterized by redness, watering, and itching.
Skin: This product may irritate skin upon contact. Harmful if absorbed through the skin. Skin inflammation is
characterized by itching, scaling, reddening, or, occasionally, blistering.
Ingestion: Harmful if swallowed. Irritation or chemical burns of the mouth, pharynx, esophagus and stomach can
develop following ingestion of this product. Even small amounts of liquid aspirated into the lungs during
ingestion or vomiting may cause pulmonary injury and possibly death.
Inhalation: Harmful if inhaled (irritant). Over-exposure by inhalation of the vapors/spray mist may produce severe
irritation of respiratory tract, characterized by coughing, choking, or shortness of breath. Exposure can
cause nausea, headaches and vomiting. Severe overexposure can cause unconsciousness and death.
Potential Chronic Health
Effects
Eyes: Repeated or prolonged contact with spray mist may produce chronic eye irritation.
Skin: Repeated skin exposure can produce local skin destruction, or dermatitis.
Ingestion: May be fatal if swallowed.
Inhalation: Repeated or prolonged inhalation of vapors/spray mist may lead to chronic respiratory irritation.
The substance is toxic to mucous membranes, upper respiratory tract, lungs, blood, kidney, liver. Exposure
Other chronic effects on
may cause asthma, dermatitis and pulmonary oedema; effects may be delayed.
Humans
Section 4. First Aid Measures
Check for and remove any contact lenses. IMMEDIATELY flush eyes with running water for at least 15
Eye Contact
minutes, keeping eyelids open. DO NOT use an eye ointment. Seek medical attention.
Wash gently and thoroughly the contaminated skin with running water and non-abrasive soap. Rinse with
Skin Contact
plenty of running water. If irritation persists, seek medical attention.
If the chemical gets onto the clothed portion of the body, remove the contaminated clothes as quickly as
Hazardous Skin Contact
possible, protecting your own hands and body. Place the person under shower. Wash gently and thoroughly
the contaminated skin with running water and non abrasive soap. Be particularly careful to clean folds,
crevices, creases and groin. Rinse with plenty of running water. Seek medical attention.
Allow the person to rest in a well ventilated area. If symptoms persist, seek medical advice immediately (show
Inhalation
the label when possible).
Evacuate the person to a safe area as soon as possible. Loosen tight clothing around the person's neck and
Hazardous Inhalation
waist. If the person is not breathing, administer mouth-to-mouth resuscitation. Warning: It may be dangerous
to the person providing aid to give mouth-to-mouth resuscitation if the inhaled material is toxic, infectious or
corrosive. Oxygen may be administered if breathing is difficult. Seek medical attention.
DO NOT induce vomiting. Have conscious person drink several glasses of water or milk. Seek immediate
Ingestion
medical attention.
DO NOT induce vomiting. Have conscious person drink several glasses of water or milk. Never give an
Hazardous Ingestion
unconscious person anything to ingest. Even small amounts of liquid aspirated into lungs during ingestion or
from vomiting may cause mild to severe pulmonary injury and possibly death. If breathing is difficult, administer
oxygen. If the person is not breathing, administer mouth-to-mouth resuscitation. WARNING: It may be
dangerous to the person providing aid to give mouth-to-mouth resuscitation when the material is toxic,
infectious or corrosive. Avoid mouth-to-mouth contact by using mouth guards or shields. Seek immediate
medical attention.
Material Safety Data Sheet
MC-Thinner
Product Name:
Page: 3
Section 5. Fire and Explosion Data
Flammable.
Flammability of the Product
The lowest known value is 443癈 (829.4癋) (Methyl isobutyl ketone).
Auto-Ignition Temperature
The lowest known value is CLOSED CUP: 16癈 (60.8癋). (Tagliabue.). OPEN CUP: 26癈 (78.8癋).
Flash Points
(Tagliabue). (Methyl isobutyl ketone)
The greatest known range is LOWER: 1.2% UPPER: 8% (Methyl isobutyl ketone)
Flammable Limits
Carbon oxides (CO, CO2), and other unidentified, possibly toxic compounds.
Products of Combustion
Flammable in presence of open flames and sparks.
Fire Hazards in Presence of
Various Substances
Risks of explosion of the product in presence of mechanical impact: Not available.
Explosion Hazards in
Risks of explosion of the product in presence of static discharge: Yes.
Presence of Various
Substances
SMALL FIRE: Use DRY chemicals, CO2, water spray or foam.
Fire Fighting Media
LARGE FIRE: Use water spray or fog. Never direct a water jet in the container in order to prevent any
and Instructions
splashing of the product which could cause spreading of the fire. Cool the containers with water spray or fog in
order to prevent pressure build-up, autoignition or explosion.
Vapor may travel considerable distance to source of ignition and flash back. When heated to decomposition it
Special Remarks on
emits toxic fumes. Liquid will float and may reignite on surface of water.
Fire Hazards
Container explosion may occur under fire conditions or when heated (due to pressure build-up). Vapor forms
Special Remarks on
explosive mixture with air between upper and lower flammable limits.
Explosion Hazards
Flammability
3
2 0
Health Reactivity
Special Hazard
Section 6. Accidental Release Measures
Absorb with an inert material and put the spilled material in an appropriate waste disposal. Wear suitable
Small Spill
protective clothing and proper respirator.
Poisonous flammable liquid, insoluble or very slightly soluble in water. Ventilate. Eliminate all sources of
Large Spill
ignition. Wear full protective equipment, including respiratory equipment during clean-up. Stop leak if without
risk. DO NOT touch spilled material. Prevent entry into storm or sanitary sewers, lakes, rivers, streams or
public waterways. Call for assistance on disposal.
Material Safety Data Sheet
MC-Thinner
Product Name:
Page: 4
Section 7. Handling and Storage
Keep locked up and out of reach of children. Manipulate in a well ventilated area. In case of insufficient ventilation, wear suitable
Precautions
respiratory equipment. Do not breathe gas/fumes/vapor/spray. Avoid contact with skin and eyes. Contact lenses should not be worn
when working with chemicals because they may contribute to the severity of an eye injury. Keep away from foodstuff, drinks and
tobacco. Eating, drinking and smoking should be prohibited in area where this material is handled, stored and processed. Workers
should wash hands and face before eating, drinking and smoking. Ensure that eyewash station and safety shower is proximal to the
work-station location. In case of accident or if you feel unwell, seek medical advice immediately (show the label when possible).
Individuals with respiratory problems (asthma, chronic bronchitis), or allergic to solvents, should avoid any contact with this product.
Ground all equipment containing material (during handling, mixing and spraying).
Flammable materials should be stored in a separate safety storage cabinet or room. Keep away from heat. Keep
Storage
away from sources of ignition. Keep container tightly closed and in a well-ventilated place. Keep away from
incompatibles. A refrigerated room would be preferable for materials with a flash point lower than 37.8癈 (100癋).
Section 8. Exposure Controls/Personal Protection
Provide exhaust ventilation or other engineering controls to keep the airborne concentrations of vapors below their
Engineering Controls
respective threshold limit value. Ensure that eyewash station and safety shower are proximal to the work-station location.
Splash goggles. Lab coat. Gloves (impervious). In case of insufficient ventilation, wear suitable respiratory equipment. During
Personal Protection
spray application: Air-purifying respirator with an organic vapor cartridge and particulate pre-filters. Be sure to use a
MSHA/NIOSH approved respirator or equivalent.
Personal Protection in Case of Splash goggles. Full suit. Boots. Gloves (impervious). A self contained breathing apparatus should be used
to avoid inhalation of the product.
a Large Spill
Section 9. Physical and Chemical Properties
Liquid. Aromatic.
Physical state and Odor
appearance
Not available.
Taste
Not applicable.
Molecular Weight
Colorless.
Color
Not applicable.
pH (1% soln/water)
The lowest known value is 117癈 (242.6癋) The highest known value is 8 ppm (Methyl
Boiling Point Odor Threshold
(Methyl isobutyl ketone). Weighted average: isobutyl ketone) Weighted average: 3.37 ppm
133.59癈 (272.5癋)
The highest known value is 1.6 (Methyl isobutyl
May start to solidify at -85癈 (-121癋) Evaporation rate
Melting Point
ketone). Weighted average: 0.92compared to Butyl
based on data for: Methyl isobutyl ketone.
acetate.
Not available. Not available.
Critical Temperature Viscosity
0.85 (Water = 1) Not available.
Water/Oil Dist. Coeff.
Specific Gravity
The highest known value is 15 mm of Hg (@ Not available.
Vapor Pressure Ionicity (in Water)
20癈) (Methyl isobutyl ketone). Weighted
average: 8.61 mm of Hg (@ 20癈)
The highest known value is 3.7 (Air = 1) Is not dispersed in water.
Dispersion Properties
Vapor Density
(Xylenes). Weighted average: 3.65 (Air = 1)
100% Insoluble in water.
Volatility Solubility
Section 10. Stability and Reactivity Data
The product is stable.
Stability
Not available.
Instability Temperature
No additional remarks.
Conditions of Instability
Reactive with strong oxidizing agents.
Incompatibility with various
substances
Not considered to be corrosive for glass and metals according to our data base.
Corrosivity
No additional remarks.
Special Remarks on
Reactivity
Material Safety Data Sheet
MC-Thinner
Product Name:
Page: 5
Section 11. Toxicological Information
Inhalation. Skin contact (absorption). Eye contact. Ingestion.
Routes of Entry
See: Section 2
Toxicity to Animals
The substance is toxic to mucous membranes, upper respiratory tract, lungs, blood, kidney, liver. Exposure
Chronic Effects on Humans
may cause asthma, dermatitis and pulmonary oedema; effects may be delayed.
Dangerous in case of skin contact (irritant, permeator), of eye contact (irritant), of ingestion, of inhalation.
Other Toxic Effects on
Humans
Embryofetotoxic in animal studies. (Xylene)
Special Remarks on
Toxicity to Animals
Narcotic effect; may cause nervous system disturbances. Reports have associated repeated and prolonged
Special Remarks on
occupational exposure to solvents with permanent brain and nervous system damage, and other systemic
Chronic Effects on Humans
effects. Intentional misuse by deliberately concentrating and inhaling vapors may be harmful or fatal.
Material is irritating to mucous membranes and upper respiratory tract. Exposure can cause nausea, headache
Special Remarks on other
and vomiting. May be aggravating to some skin and asthma-type conditions, and to pre-existing liver/or kidney
Toxic Effects on Humans
disorders.
Section 12. Ecological Information
Not available.
Ecotoxicity
Not available.
BOD5 and COD
Not available.
Products of Biodegradation
Not available.
Toxicity of the Products
of Biodegradation
No additional remarks.
Special Remarks on the
Products of Biodegradation
Section 13. Disposal Considerations
In accordance with municipal, state and federal regulations. Consult your local or regional authorities. Empty
Waste Disposal
containers must be handled with care due to product residue. Do not heat or cut empty containers with electric
or gas torch.
Section 14. Transport Information
DOT CLASS 3: Flammable liquid with a flash point lower than 37.8癈 (100癋). PG: II
DOT Classification
UN1263 Paint related material.
DOT Identification
number
No additional remarks.
Special Provisions for
Transport
DOT (Pictograms)
Material Safety Data Sheet
MC-Thinner
Product Name:
Page: 6
Section 15. Other Regulatory Information and Pictograms
TSCA (Toxic Substance Control Act): All components of this product are either reported in EPA TSCA
Other Regulations
Inventory, or exempt. OSHA: Hazardous by definition of Hazard Communication Standard (29 CFR
1910.1200).
Other Classifications WHMIS (Canada)
DSCL (EEC)
Fire Hazard
Hazardous Material 2 National Fire Protection
Health Hazard
3
Information System Association (U.S.A.)
3
Fire Hazard
2 0 Reactivity
(U.S.A.) Health
0
Reactivity
Specific hazard
X
Personal Protection
WHMIS (Canada)
(Pictograms)
DSCL (Europe)
(Pictograms)
TDG (Canada)
(Pictograms)
ADR (Europe)
(Pictograms)
Protective Clothing
(Pictograms)
Section 16. Other Information
Manufacturer's MSDS, RTESC, NIOSH, CCOHS.
References
Hazardous Chemicals Desk Reference, R.J. Lewis, Sr. 2nd ed. 1991 Van Nostrand Reinhold.
Hawley, G.G.. The Condensed Chemical Dictionary, 12th ed., New York N.Y., Van Nostrand Reinhold, 1987.
Individuals with respiratory problems (asthma, chronic bronchitis) should avoid any contact with this product.
Other Special
Considerations
Verified by Heidi Brown.
Validated by Heidi Brown on 7/5/2004.
Printed 7/28/2004.
EMERGENCY PHONE NUMBERS:
USA and Canada: 1-800 424-9300
International: 1-703 527-3887
Notice to Reader
To the best of our knowledge, the information contained herein is accurate. However, neither the above named supplier nor any of its subsidiaries
assumes any liability whatsoever for the accuracy or completeness of the information contained herein. Final determination of suitability of any
material is the sole responsibility of the user. All materials may present unknown hazards and should be used with caution. Although certain
hazards are described herein, we cannot guarantee that these are the only hazards that exist.
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