acetaldehyde
CAS No.: 75-07-0
Synonyms:
Formula: C2H4O
Exact Mass: 44.02620
Molecular Weight: 44.05260
PSA: 17.07000
LogP: 0.20520
acetaldehyde 75-07-0 MSDS
Name: Acetaldehyde 99.5% Material Safety Data Sheet
Synonym: Acetic aldehyde; Acetylaldehyde; Ethylaldehyde; Ethanal
CAS: 75-07-0
Section 1 - Chemical Product   MSDS Name:Acetaldehyde 99.5% Material Safety Data Sheet
Synonym:Acetic aldehyde; Acetylaldehyde; Ethylaldehyde; Ethanal

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
75-07-0 Acetaldehyde > 99.5 200-836-8
Hazard Symbols: XN F+
Risk Phrases: 12 36/37 40

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Extremely flammable. Irritating to eyes and respiratory system.
Possible risks of irreversible effects.Lachrymator (substance which increases the flow of tears).
Potential Health Effects
Eye:
Causes severe eye irritation. Vapors may cause eye irritation.
May cause transient corneal injury. Lachrymator (substance which increases the flow of tears).
Skin:
May cause skin irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed. May cause central nervous system depression.
Inhalation:
Causes respiratory tract irritation. May cause narcotic effects in high concentration. Exposure produces central nervous system depression. Vapors may cause dizziness or suffocation. Can produce delayed pulmonary edema. Inhalation of large amounts may cause respiratory stimulation, followed by respiratory depression, convulsions and possible death due to respiratory paralysis.
Chronic:
Prolonged or repeated skin contact may cause dermatitis. Prolonged or repeated eye contact may cause conjunctivitis. Prolonged skin contact may cause erythema (redness) and burns. Long-term inhalation studies of acetaldehyde produced laryngeal cancers in hamsters and nasal cancers in rats.

Section 4 - FIRST AID MEASURES
  Eyes: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical aid immediately.
Skin:
In case of contact, immediately flush skin with soap and plenty of water. Remove contaminated clothing and shoes. Get medical aid if symptoms occur. Wash clothing before reuse.
Ingestion:
If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Persons with kidney disease, chronic respiratory disease, liver disease, or skin disease may be at increased risk from exposure to this substance. Treat symptomatically and supportively.
Antidote: None reported.

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. Water runoff can cause environmental damage. Dike and collect water used to fight fire. Vapors may form an explosive mixture with air. Use water spray to keep fire-exposed containers cool. Wear appropriate protective clothing to prevent contact with skin and eyes. Wear a self-contained breathing apparatus (SCBA) to prevent contact with thermal decomposition products. Extremely flammable liquid and vapor. Vapor may cause flash fire. Forms peroxides of unknown stability. Containers may explode in the heat of a fire. Will be easily ignited by heat, sparks or flame. Vapors are heavier than air and may travel to a source of ignition and flash back. Vapors can spread along the ground and collect in low or confined areas. Sensitivity to mechanical impact: Yes, if peroxides are formed. Closed containers exposed to heat may explode. Sensitive to static discharge.
Extinguishing Media:
For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Water may be ineffective. Do NOT use straight streams of water.

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. Use water spray to dilute spill to a non-flammable mixture. Avoid runoff into storm sewers and ditches which lead to waterways. Use water spray to disperse the gas/vapor.
Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. Place under an inert atmosphere. U.S. regulations require reporting spills and releases to soil, water and air in excess of reportable quantities.

Section 7 - HANDLING and STORAGE
  Handling:
Ground and bond containers when transferring material. Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Take precautionary measures against static discharges. Keep container tightly closed. Avoid contact with heat, sparks and flame. Do not ingest or inhale. Handle under an inert atmosphere. Store protected from air. This product may be under pressure; cool before opening. If peroxide formation is suspected, do not open or move container. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Use only with adequate ventilation.
Storage:
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep from freezing. Store in a tightly closed container.
Keep from contact with oxidizing materials. Keep away from strong acids. Refrigerator/flammables. Keep away from reducing agents. Do not expose to air. Store in explosion-proof refrigerator. After opening, purge container with nitrogen before reclosing.
Periodically test for peroxide formation on long-term storage.
Addition of water or appropriate reducing materials will lessen peroxide formation. Store under an inert atmosphere.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Use explosion-proof ventilation equipment. Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits.
Personal Protective Equipment Eyes: Wear chemical goggles.
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 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Liquid
Appearance: clear, colorless
Odor: pungent odor - fruity odor
pH: Not available.
Vapor Pressure: 750 mm Hg @ 20 deg C
Viscosity: Not available.
Boiling Point: 20 - 21 deg C @ 760 mm Hg
Freezing/Melting Point: -123.5 deg C
Autoignition Temperature: 175 deg C ( 347.00 deg F)
Flash Point: -38 deg C ( -36.40 deg F)
Explosion Limits, lower: 4.0 vol %
Explosion Limits, upper: 60.0 vol %
Decomposition Temperature: > 400 deg C
Solubility in water: Soluble.
Specific Gravity/Density: 0.788 g/cm3 @ 16C
Molecular Formula: C2H4O
Molecular Weight: 44.05

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Unstable in air. May undergo autopolymerization. Forms explosive peroxides on prolonged storage and exposure to air. Polymerizes violently in the presence of traces of metals or acids.
Conditions to Avoid:
Ignition sources, exposure to air, heat.
Incompatibilities with Other Materials:
Strong oxidizing agents, strong reducing agents, acids, strong bases, alcohols, amines, ammonia, halogens, phenols, phosphorus, isocyanates, acid anhydrides, hydrogen sulfide, air, ketones, hydrogen cyanide, cobalt chloride, mercury (II) chlorate, mercury (II) perchlorate, trace metals.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide, methane.
Hazardous Polymerization: May occur.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 75-07-0: AB1925000 LD50/LC50:
CAS# 75-07-0: Draize test, rabbit, eye: 40 mg Severe; Inhalation, mouse: LC50 = 23 gm/m3/4H; Inhalation, rat: LC50 = 13300 ppm/4H; Oral, mouse: LD50 = 900 mg/kg; Oral, rat: LD50 = 661 mg/kg; Skin, rabbit: LD50 = 3540 mg/kg.
Carcinogenicity:
Acetaldehyde - ACGIH: A3 - Animal Carcinogen California: carcinogen; initial date 4/1/88 NIOSH: occupational carcinogen NTP: Suspect carcinogen OSHA: Possible Select carcinogen IARC: Group 2B carcinogen Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
  Ecotoxicity:
Fish: Fathead Minnow: EC50 = 30.8-37.2 mg/L; 96 Hr; Flow-through at 21.6-23.9C (pH 7.1-7.63)Fish: Bluegill/Sunfish: LC50 = 53 mg/L; 96 Hr; UnspecifiedWater flea Daphnia: EC50 = 9000-14000 mg/L; 48 Hr; UnspecifiedBacteria: Phytobacterium phosphoreum: EC50 =280.6-403.5 mg/L; 5,15,25 min; Unspecified

Section 13 - DISPOSAL CONSIDERATIONS
  Products which are considered hazardous for supply are classified as Special Waste and the disposal of such chemicals is covered by regulations which may vary according to location. Contact a specialist disposal company or the local waste regulator for advice. Empty containers must be decontaminated before returning for recycling.

Section 14 - TRANSPORT INFORMATION
 
IATA
Shipping Name: ACETALDEHYDE
Hazard Class: 3
UN Number: 1089
Packing Group: I
IMO
Shipping Name: ACETALDEHYDE
Hazard Class: 3.1
UN Number: 1089
Packing Group: I
RID/ADR
Shipping Name: ACETALDEHYDE
Dangerous Goods Code: 3(1A)
UN Number: 1089

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN F+
Risk Phrases:
R 12 Extremely flammable.
R 36/37 Irritating to eyes and respiratory system.
R 40 Possible risks of irreversible effects.
Safety Phrases:
S 16 Keep away from sources of ignition - No
smoking.
S 33 Take precautionary measures against static
discharges.
S 36/37 Wear suitable protective clothing and
gloves.
WGK (Water Danger/Protection)
CAS# 75-07-0: 1
United Kingdom Occupational Exposure Limits
CAS# 75-07-0: OES-United Kingdom, TWA 20 ppm TWA; 37 mg/m3 TWA
CAS# 75-07-0: OES-United Kingdom, STEL 50 ppm STEL; 92 mg/m3 STEL
Canada
CAS# 75-07-0 is listed on Canada's DSL List.
CAS# 75-07-0 is listed on Canada's Ingredient Disclosure List.
Exposure Limits
CAS# 75-07-0: OEL-ARAB Republic of Egypt:TWA 100 ppm (180 mg/m3)
OEL-AUSTRALIA:TWA 100 ppm (180 mg/m3);STEL 150 pp (270 mg/m3)
OEL-BELGIUM:TWA 100 ppm (180 mg/m3);STEL 150 ppm (270 mg/m3)
OEL-CZECHOSLOVAKIA:TWA 200 mg/m3;STEL 400 mg/m3;CAR
OEL-DENMARK:TWA 25 ppm (45 mg/m3)
OEL-FINLAND:TWA 50 ppm (90 mg/m3);STEL 75 ppm (13 mg/m3)
OEL-FRANCE:TWA 100 ppm (180 mg/m3)
OEL-GERMANY:TWA 50 ppm (90 mg/m3);Carcinogen JAN9
OEL-HUNGARY:STEL 25 mg/m3;Carcinogen
OEL-INDIA:TWA 100 ppm (180 mg/m3);STEL 150 ppm (270 mg/m3)
OEL-THE NETHERLANDS:TWA 100 ppm (180 mg/m3)
OEL-THE PHILIPPINES:TWA 200 ppm (360 mg/m3)
OEL-POLAND:TWA 5 mg/m3
OEL-RUSSIA:STEL 5 mg/m3;Skin
OEL-SWEDEN:TWA 25 ppm (45 mg/m3);STEL 50 ppm (90 mg/m3)
OEL-SWITZERLAND:TWA 50 ppm (90 mg/m3);STEL 100 pp (180 mg/m3)
OEL-TURKEY:TWA 200 ppm (360 mg/m3)
OEL-UNITED KINGDOM:TWA 100 ppm (180 mg/m3);STEL 150 ppm
OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGI TLV
US FEDERAL
TSCA
CAS# 75-07-0 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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