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MSDS 
:
 3-(Methylthio)propionaldehyde, 95% (GC)
CAS 
:
 3268-49-3
SYNONYMS 
:
 Methional; Beta-(Methylmercapto)propionaldehyde;     3-(Methylmercapto)propionaldehyde; Methylmercaptopropionic Aldehyde.
Catalog of Chemical Suppliers, Buyers, Custom Synthesis Companies And Equipment Manufacturers
[ 3-(Methylthio)propionaldehyde, 95% (GC) 3268-49-3 ]
Suppliers:   
HBCChem/Honestjoy, Inc.

USA: Tel: +1-510-219-6317 Fax: +1-510-675-0318 E-mail: hong@chemspace.net
Address: 2819 Whipple Road Union City, CA 94587 USA
Website:HBCChem,Inc

China: Tel:+86-755-36694831 Fax:+86-755-36694832 Email: sale@feiyang.com.cn

Buyers:  
Not Available
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 3268-49-3 |4-Thiapentanal | 95 | 221-882-5 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: XN
Risk Phrases: 36/37/38 20

**** SECTION 3 - HAZARDS IDENTIFICATION ****

EMERGENCY OVERVIEW
Irritating to eyes, respiratory system and skin. Harmful by
inhalation.Stench.

Potential Health Effects
Eye:
Causes eye irritation. May cause chemical conjunctivitis and
corneal damage.
Skin:
Causes skin irritation. May cause cyanosis of the extremities.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and
diarrhea. Mercaptans may cause nausea and headache. Exposure to high
concentrations of mercaptans can produce unconsciousness with
cyanosis (bluish discoloration of skin due to deficient oxygenation
of the blood), cold extremities and rapid pulse. May be harmful if
swallowed.
Inhalation:
Causes respiratory tract irritation. Aspiration may lead to
pulmonary edema. Exposure to high concentrations of mercaptans can
produce unconsciousness with cyanosis (bluish discoloration of skin
due to deficient oxygenation of the blood), cold extremities and
rapid pulse. Mercaptans may cause nausea and headache. Can produce
delayed pulmonary edema. Inhalation at high concentrations may cause
CNS depression and asphixiation.
Chronic:
Effects may be delayed.

**** SECTION 4 - FIRST AID MEASURES ****

Eyes:
Immediately flush eyes with plenty of water for at least 15 minutes,
occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15
minutes while removing contaminated clothing and shoes. Wash clothing
before reuse.
Ingestion:
Get medical aid. Do NOT induce vomiting. If conscious and alert,
rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation:
Remove from exposure and move to fresh air immediately. If not
breathing, give artificial respiration. If breathing is difficult,
give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.

**** SECTION 5 - FIRE FIGHTING MEASURES ****

General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear. During a fire, irritating and highly toxic gases
may be generated by thermal decomposition or combustion. Use water
spray to keep fire-exposed containers cool. Combustible liquid.
Vapors may be heavier than air. They can spread along the ground and
collect in low or confined areas. Containers may explode when heated.
Extinguishing Media:
In case of fire, use water, dry chemical, chemical foam, or
alcohol-resistant foam. Use water spray to cool fire-exposed
containers.

**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****

General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth),
then place in suitable container. Avoid runoff into storm sewers and
ditches which lead to waterways. Clean up spills immediately,
observing precautions in the Protective Equipment section. Remove all
sources of ignition. Use a spark-proof tool. Provide ventilation.

**** SECTION 7 - HANDLING and STORAGE ****

Handling:
Wash thoroughly after handling. Remove contaminated clothing and
wash before reuse. Use with adequate ventilation. Avoid contact with
eyes, skin, and clothing. Empty containers retain product residue,
(liquid and/or vapor), and can be dangerous. Keep container tightly
closed. Keep away from heat, sparks and flame. Avoid ingestion and
inhalation. Do not pressurize, cut, weld, braze, solder, drill,
grind, or expose empty containers to heat, sparks or open flames.
Storage:
Keep away from heat, sparks, and flame. Keep away from sources of
ignition. Store in a tightly closed container. Store in a cool, dry,
well-ventilated area away from incompatible substances. Keep
refrigerated. (Store below 4C/39F.) Storage under a nitrogen
blanket has been recommended.

**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****

Engineering Controls:
Facilities storing or utilizing this material should be equipped
with an eyewash facility and a safety shower. Use adequate
ventilation to keep airborne concentrations low.
Exposure Limits
CAS# 3268-49-3:


Personal Protective Equipment

Eyes:
Wear appropriate protective eyeglasses or chemical
safety goggles as described by OSHA's eye and face
protection regulations in 29 CFR 1910.133 or European
Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear appropriate protective clothing to prevent skin
exposure.
Respirators:
Follow the OSHA respirator regulations found in 29
CFR 1910.134 or European Standard EN 149. Use a
NIOSH/MSHA or European Standard EN 149 approved
respirator if exposure limits are exceeded or if
irritation or other symptoms are experienced.

**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****

Physical State: Liquid
Color: faint yellow - colorless
Odor: stench
pH: Not available.
Vapor Pressure: 760 mm Hg @ 165C
Viscosity: Not available.
Boiling Point: 165-166 deg C @ 11.00mmHg
Freezing/Melting Point: Not available.
Autoignition Temperature: Not available.
Flash Point: 61 deg C ( 141.80 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density: 1.0520g/cm3
Molecular Formula: C4H8OS
Molecular Weight: 104.17

**** SECTION 10 - STABILITY AND REACTIVITY ****

Chemical Stability:
Stable at room temperature in closed containers under normal storage
and handling conditions.
Conditions to Avoid:
Incompatible materials, ignition sources, excess heat, strong
oxidants.
Incompatibilities with Other Materials:
Strong bases, strong oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, oxides of sulfur, irritating and toxic fumes and
gases, carbon dioxide.
Hazardous Polymerization: Has not been reported

**** SECTION 11 - TOXICOLOGICAL INFORMATION ****

RTECS#:
CAS# 3268-49-3: UE2285000
LD50/LC50:
CAS# 3268-49-3: Draize test, rabbit, eye: 0.01 mL Moderate; Draize
test, rabbit, skin: 500 uL/24H Severe; Draize test, rabbit, skin: 0.5
mL/4H Moderate; Inhalation, mouse: LC50 = 5400 mg/m3/2H; Inhalation,
mouse: LC50 = 5400 mg/m3/2H; Inhalation, rat: LC50 = 5820 mg/m3/4H;
Inhalation, rat: LC50 = 5820 mg/m3/4H; Oral, mouse: LD50 = 1620
mg/kg; Oral, mouse: LD50 = 1620 mg/kg; Oral, rat: LD50 = 700 mg/kg;
Oral, rat: LD50 = 4400 mg/kg; Oral, rat: LD50 = 1.52 mg/kg; Skin,
rabbit: LD50 = 747 ug/kg/24H.
Carcinogenicity:
4-Thiapentanal -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

**** SECTION 12 - ECOLOGICAL INFORMATION ****



**** SECTION 13 - DISPOSAL CONSIDERATIONS ****

Dispose of in a manner consistent with federal, state, and local regulations.

**** SECTION 14 - TRANSPORT INFORMATION ****

IATA
Shipping Name: 4-THIAPENTANAL
Hazard Class: 6.1
UN Number: 2785
Packing Group: III
IMO
Shipping Name: 4-THIAPENTANAL
Hazard Class: 6.1
UN Number: 2785
Packing Group: III
RID/ADR
Shipping Name: 4-THIAPENTANAL
Hazard Class: 6.1
UN Number: 2785
Packing group: III

**** SECTION 15 - REGULATORY INFORMATION ****

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN
Risk Phrases:
R 20 Harmful by inhalation.
R 36/37/38 Irritating to eyes, respiratory system
and skin.
Safety Phrases:
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 37/39 Wear suitable gloves and eye/face
protection.
WGK (Water Danger/Protection)
CAS# 3268-49-3: 3
Canada
CAS# 3268-49-3 is listed on Canada's DSL List.
CAS# 3268-49-3 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 3268-49-3 is listed on the TSCA inventory.

**** SECTION 16 - ADDITIONAL INFORMATION ****

MSDS Creation Date: 7/28/1999 Revision #2 Date: 3/18/2003

The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
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