ACETALDEHYDE
MSDS Number: A0060 --- Effective Date: 12/08/96
1. Product Identification
Synonyms: Acetic aldehyde; ethanal; ethyl aldehyde
CAS No.: 75-07-0
Molecular Weight: 44.05
Chemical Formula: CH3CHO
Product Codes: J.T. Baker:
A025
Mallinckrodt:
2401
2. Composition/Information on Ingredients
Ingredient CAS No Percent Hazardous
--------------------------------------- ------------ ------- ---------
Acetaldehyde 75-07-0 100% Yes
3. Hazards Identification
Emergency Overview
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DANGER! EXTREMELY FLAMMABLE LIQUID AND VAPOR. VAPOR MAY CAUSE FLASH
FIRE. HAZARDOUS POLYMERIZATION MAY OCCUR. MAY FORM EXPLOSIVE PEROXIDES IN
AIR. CAUSES SEVERE EYE IRRITATION. HARMFUL IF SWALLOWED OR INHALED. AFFECTS
CENTRAL NERVOUS SYSTEM, LIVER AND KIDNEYS. CAUSES IRRITATION TO SKIN AND
RESPIRATORY TRACT. POSSIBLE CANCER HAZARD. MAY CAUSE CANCER BASED ON ANIMAL
DATA. Risk of cancer depends on duration and level of exposure.
J.T. Baker SAF-T-DATA(tm) Ratings (Provided here for your convenience)
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Health Rating: 3 - Severe (Cancer Causing)
Flammability Rating: 4 - Extreme (Flammable)
Reactivity Rating: 2 - Moderate
Contact Rating: 2 - Moderate
Lab Protective Equip: GOGGLES & SHIELD; LAB COAT & APRON; VENT HOOD; PROPER
GLOVES; CLASS B EXTINGUISHER
Storage Color Code: Red Stripe (Store Separately)
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Potential Health Effects
----------------------------------
Inhalation:
Exposure to vapors causes irritation to the mucous membranes and
respiratory tract, coughing, dizziness, light sensitivity, sore throat, and
labored breathing. Large exposures may cause irregular heartbeat, narcosis,
delayed pulmonary edema and death by respiratory failure.
Ingestion:
Causes irritation to the gastrointestinal tract. Symptoms may include
nausea, vomiting and diarrhea. Toxic! May cause systemic poisoning with
symptoms paralleling those of inhalation.
Skin Contact:
Vapor and liquid cause irritation, redness, and pain. Prolonged contact
with liquid may cause erythema and burns, although rapid evaporation limits
this possibility.
Eye Contact:
Vapors cause irritation, redness, and pain. Liquid splashes may cause
burning sensation, severe irritation, blurred vision and temporary eye
damage.
Chronic Exposure:
Repeated exposure to vapors may cause dermatitis and conjunctivitis. Liver
and kidney damage is associated with chronic exposure to acetaldehyde.
There is inadequate evidence for the carcinogenicity of acetaldehyde to
humans, but there is sufficient evidency for the carcinogenicity of
acetaldehyde in animals.
Aggravation of Pre-existing Conditions:
Persons with pre-existing skin or eye disorders or impaired liver, kidney,
or pulmonary function may be more susceptible to the effects of this agent.
Alcoholics are specially affected because alcohol is metabolized to
acetaldehyde in the blood and additional exposure to acetaldehyde can
aggravate problems.
4. First Aid Measures
Inhalation:
Remove to fresh air. If not breathing, give artificial respiration. If
breathing is difficult, give oxygen. Call a physician.
Ingestion:
Induce vomiting immediately as directed by medical personnel. Never give
anything by mouth to an unconscious person. Call a physician.
Skin Contact:
In case of contact, immediately flush skin with plenty of water for at
least 15 minutes. Remove contaminated clothing and shoes. Wash clothing
before reuse. Call a physician.
Eye Contact:
Immediately flush eyes with plenty of water for at least 15 minutes,
lifting lower and upper eyelids occasionally. Get medical attention
immediately.
5. Fire Fighting Measures
Fire:
Flash point: -38C (-36F) CC
Autoignition temperature: 175C (347F)
Flammable limits in air % by volume:
lel: 4; uel: 60
Reactive and Extremely Flammable liquid.
Fire may produce poisonous gases.
Explosion:
Above flash point, vapor-air mixtures are explosive within flammable limits
noted above. Vapors can flow along surfaces to distant ignition source and
flash back. May oxidize readily in air to form peroxides that may explode
spontaneously. Contact with strong oxidizers or incompatibilities may cause
fires and explosions. Sensitivity to mechanical impact: Yes, if peroxides
are formed. Closed containers exposed to heat may explode. Sensitive to
static discharge.
Fire Extinguishing Media:
Dry chemical, foam or carbon dioxide. Water may be ineffective. Water spray
may be used to keep fire exposed containers cool, dilute spills to
nonflammable mixtures, protect personnel attempting to stop leak and
disperse vapors.
Special Information:
This highly flammable liquid must be kept from sparks, open flame, hot
surfaces, and all sources of heat and ignition. In the event of a fire,
wear full protective clothing and NIOSH-approved self-contained breathing
apparatus with full facepiece operated in the pressure demand or other
positive pressure mode. Fight fires from a safe distance. Structural
firefighters' clothing provides only limited protection to the combustion
products of this material.
6. Accidental Release Measures
Ventilate area of leak or spill. Remove all sources of ignition. Wear
appropriate personal protective equipment as specified in Section 8.
Isolate hazard area. Keep unnecessary and unprotected personnel from
entering. Contain and recover liquid when possible. Use non-sparking tools
and equipment. Collect liquid in an appropriate container or absorb with an
inert material (e. g., vermiculite, dry sand, earth), and place in a
chemical waste container. Do not use combustible materials, such as saw
dust. Do not flush to sewer! Neutralize with sodium bisulfate. If material
has mixed with water at concentrations of 10 ppm or greater, apply
activated carbon at ten times the spilled amount. If a leak or spill has
not ignited, use water spray to disperse the vapors, to protect personnel
attempting to stop leak, and to flush spills away from exposures. US
Regulations (CERCLA) require reporting spills and releases to soil, water
and air in excess of reportable quantities. The toll free number for the US
Coast Guard National Response Center is (800) 424-8802.
J. T. Baker SOLUSORB(tm) solvent adsorbent is recommended for spills of
this product.
7. Handling and Storage
Wear special protective equipment (Sec. 8) for maintenance break-in or
where exposures may exceed established exposure levels. Wash hands, face,
forearms and neck when exiting restricted areas. Shower, dispose of outer
clothing, change to clean garments at the end of the day. Avoid
cross-contamination of street clothes. Wash hands before eating and do not
eat, drink, or smoke in workplace. Protect against physical damage. Store
bulk quantities outside in detached tanks provided with refrigeration and
inert gas blanket, such as nitrogen, in void space above liquid level.
Smaller container storage should be in a detached noncombustible building,
provided with cooling facilities, adequate ventilation and free of sources
of ignition; no alkaline materials (such as caustics, ammonia, amines),
halogens, alcohols, ketones, acid anhydrides, phenols, nor oxidizing
materials, permitted in storage room. Inside storage should be in a
standard flammable liquids storage room or cabinet. Isolate from other
storage. Containers should be bonded and grounded for transfers to avoid
static sparks. Acetaldehyde may form unstable peroxides. Use caution when
distilling or evaporating. Do not distill or evaporate to dryness. Drums
containing acetaldehyde should never be stored in direct sunlight or other
warm areas. DANGER! DO NOT OPEN Unless Contents Are At 50F or Below For At
Least 24 hours. Containers of this material may be hazardous when empty
since they retain product residues (vapors, liquid); observe all warnings
and precautions listed for the product.
8. Exposure Controls/Personal Protection
Airborne Exposure Limits:
-OSHA Permissible Exposure Limit (PEL):
200 ppm (TWA)
-ACGIH Threshold Limit Value (TLV):
25 ppm Ceiling, listed as A3, animal carcinogen.
Ventilation System:
A system of local and/or general exhaust is recommended to keep employee
exposures below the Airborne
Exposure Limits. Local exhaust ventilation is generally preferred because
it can control the emissions of the contaminant at its source, preventing
dispersion of it into the general work area. Please refer to the ACGIH
document, Industrial Ventilation, A Manual of Recommended Practices,
most recent edition, for details. Use explosion-proof equipment.
Personal Respirators (NIOSH Approved):
If the exposure limit is exceeded, a full facepiece respirator with organic
vapor cartridge may be worn up to 50 times the exposure limit or the
maximum use concentration specified by the appropriate regulatory agency or
respirator supplier, whichever is lowest. For emergencies or instances
where the exposure levels are not known, use a full-facepiece
positive-pressure, air-supplied respirator. WARNING: Air purifying
respirators do not protect workers in oxygen-deficient atmospheres. The
cartridges recommended for this material have a predicted service of less
than 30 minutes at concentrations of ten times (10x) the exposure limits.
Actual service life will vary considerbly, depending on concentration
levels, temperature, humidity, and work rate.
Skin Protection:
Wear impervious protective clothing, including boots, gloves, lab coat,
apron or coveralls, as appropriate, to prevent skin contact.
Eye Protection:
Use chemical safety goggles and/or a full face shield where splashing is
possible. Maintain eye wash fountain and quick-drench facilities in work
area.
9. Physical and Chemical Properties
Appearance:
Clear, colorless liquid. Rapidly volatilizes at 69F.
Odor:
Pungent, irritating odor; may be fruity and pleasant at low concentrations.
Solubility:
Miscible in water.
Specific Gravity:
0.79 @ 16C/4C
pH:
No information found.
% Volatiles by volume @ 21C (70F):
100
Boiling Point:
21C (70F)
Melting Point:
-123.5C (-191F)
Vapor Density (Air=1):
1.52 @ 21C (70F).
Vapor Pressure (mm Hg):
750 @ 20C (68F)
Evaporation Rate (BuAc=1):
49.1
10. Stability and Reactivity
Stability:
Highly reactive and unstable. Can be oxidized or reduced readily. All
reactions can be violent. Forms acetic acid while liberating heat in the
presence of air and moisture. May form unstable peroxides which may
spontaneously explode and burst container. May polymerize liberating much
heat.
Hazardous Decomposition Products:
Carbon dioxide and carbon monoxide may form when heated to decomposition.
Hazardous Polymerization:
Polymerizes when contaminated with acids, alkalis, and trace metals..
Incompatibilities:
Amines, acetic acid, strong bases, polymerization catalysts, acid
anhydrides, air, alcohols, ammonia (anhydrous), bromine, chlorine,
fluorine, hydrogen cyanide, hydrogen sulfide, iodine, ketones, phenols,
phosphorus, isocyanates, mercury II salts, sodium hydroxide and oxidizing
agents.
Conditions to Avoid:
Heat, flame, ignition sources, air, incompatibles
11. Toxicological Information
Toxicological Data:
Oral rat LD50: 661 mg/kg; inhalation rat LC50: 15.6 gm/m3/4-hr; skin rabbit
LD50: 3540 mg/kg; Irritation data: skin rabbit, Draize, 500 mg, open, mild;
eye rabbit, Draize, 40 mg, severe; investigated as a mutagen, tumorigen,
reproductive effector.
Reproductive Toxicity:
This material has been linked to mutagenic effects in humans.
--------\Cancer Lists\------------------------------------------------------
---NTP Carcinogen---
Ingredient Known Anticipated IARC Category
------------------------------------ ----- ----------- -------------
Acetaldehyde (75-07-0) No Yes 2B
12. Ecological Information
Environmental Fate:
When released into the soil, this material may leach into groundwater. When
released into the soil, this material is expected to readily biodegrade.
When released into the soil, this material is expected to quickly
evaporate. When released into water, this material is expected to readily
biodegrade. When released to water, this material is expected to quickly
evaporate. When released into the water, this material is expected to have
a half-life of less than 1 day. This material has a log octanol-water
partition coefficient of less than 3.0. This material is not expected to
significantly bioaccumulate. When released into the air, this material is
expected to be readily degraded by reaction with photochemically produced
hydroxyl radicals. When released into the air, this material is expected to
have a half-life of less than 1 day.
Environmental Toxicity:
The LC50/96-hour values for fish are between 10 and 100 mg/l.
13. Disposal Considerations
Whatever cannot be saved for recovery or recycling should be handled as
hazardous waste and sent to a RCRA approved incinerator or disposed in a
RCRA approved waste facility. Processing, use or contamination of this
product may change the waste management options. State and local disposal
regulations may differ from federal disposal regulations.
Dispose of container and unused contents in accordance with federal, state
and local requirements.
14. Transport Information
Domestic (Land, D.O.T.)
-----------------------
Proper Shipping Name: ACETALDEHYDE
Hazard Class: 3
UN/NA: UN1089
Packing Group: I
Information reported for product/size: 500ML
International (Water, I.M.O.)
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Proper Shipping Name: ACETALDEHYDE
Hazard Class: 3.1
UN/NA: UN1089
Packing Group: I
Information reported for product/size: 500ML
15. Regulatory Information
--------\Chemical Inventory Status - Part 1\---------------------------------
Ingredient TSCA EC Japan Australia
----------------------------------------------- ---- --- ----- ---------
Acetaldehyde (75-07-0) Yes Yes Yes Yes
--------\Chemical Inventory Status - Part 2\---------------------------------
--Canada--
Ingredient Korea DSL NDSL Phil.
----------------------------------------------- ----- --- ---- -----
Acetaldehyde (75-07-0) Yes Yes No Yes
--------\Federal, State & International Regulations - Part 1\----------------
-SARA 302- ------SARA 313------
Ingredient RQ TPQ List Chemical Catg.
----------------------------------------- --- ----- ---- --------------
Acetaldehyde (75-07-0) No No Yes No
--------\Federal, State & International Regulations - Part 2\----------------
-RCRA- -TSCA-
Ingredient CERCLA 261.33 8(d)
----------------------------------------- ------ ------ ------
Acetaldehyde (75-07-0) 1000 U001 Yes
Chemical Weapons Convention: No TSCA 12(b): No CDTA: No
SARA 311/312: Acute: Yes Chronic: Yes Fire: Yes Pressure: No
Reactivity: Yes (Pure / Liquid)
Prop 65:
THIS PRODUCT CONTAINS A CHEMICAL(S) KNOWN TO THE STATE OF
CALIFORNIA TO CAUSE CANCER.
Australian Hazchem Code: 2YE
Poison Schedule: No information found.
WHMIS:
This MSDS has been prepared according to the hazard criteria of
the Controlled Products Regulations (CPR) and the MSDS contains
all of the information required by the CPR.
16. Other Information
NFPA Ratings:
Health: 3 Flammability: 4 Reactivity: 2
Label Hazard Warning:
DANGER! EXTREMELY FLAMMABLE LIQUID AND VAPOR. VAPOR MAY CAUSE FLASH FIRE.
HAZARDOUS POLYMERIZATION MAY OCCUR. MAY FORM EXPLOSIVE PEROXIDES IN AIR.
CAUSES SEVERE EYE IRRITATION. HARMFUL IF SWALLOWED OR INHALED. AFFECTS
CENTRAL NERVOUS SYSTEM, LIVER AND KIDNEYS. CAUSES IRRITATION TO SKIN AND
RESPIRATORY TRACT. POSSIBLE CANCER HAZARD. MAY CAUSE CANCER BASED ON ANIMAL
DATA. Risk of cancer depends on duration and level of exposure.
Label Precautions:
Keep away from heat, sparks and flame.
Keep container tightly closed.
Use only with adequate ventilation.
Do not breathe vapor.
Wash thoroughly after handling.
Do not get in eyes, on skin, or on clothing.
DO NOT OPEN Unless Contents Are At 50 or Below For At Least 24 Hours.
Label First Aid:
If inhaled, remove to fresh air. If not breathing, give artificial
respiration. If breathing is difficult, give oxygen. In case of contact,
immediately flush eyes or skin with plenty of water for at least 15 minutes.
Remove contaminated clothing and shoes. Wash clothing before reuse. If
swallowed, induce vomiting immediately as directed by medical personnel.
Never give anything by mouth to an unconscious person. In all cases call a
physician.
Product Use:
Laboratory Reagent.
Revision Information:
Pure. New 16 section MSDS format, all sections have been revised.
Disclaimer:
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Mallinckrodt Baker, Inc. provides the information contained herein in good
faith but makes no representation as to its comprehensiveness or accuracy. This
document is intended only as a guide to the appropriate precautionary handling
of the material by a properly trained person using this product. Individuals
receiving the information must exercise their independent judgment in
determining its appropriateness for a particular purpose. MALLINCKRODT BAKER,
INC. MAKES NO REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS OR IMPLIED,
INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE WITH RESPECT TO THE INFORMATION SET FORTH HEREIN OR THE
PRODUCT TO WHICH THE INFORMATION REFERS. ACCORDINGLY, MALLINCKRODT BAKER, INC.
WILL NOT BE RESPONSIBLE FOR DAMAGES RESULTING FROM USE OF OR RELIANCE UPON THIS
INFORMATION.
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Prepared by: Strategic Services Division
Phone Number: (314) 539-1600 (U.S.A.)