Material Safety Data Sheet
Section 1 - Chemical Product and Company Identification
MSDS Name: Acetaldehyde, 99.5%
AC149510000, AC149510010, AC149510100, AC149512500, O1004-250, S79878
Acetic aldehyde; Acetylaldehyde; Ethylaldehyde; Ethanal.
1 Reagent Lane
Fair Lawn, NJ 07410
For information, call: 201-796-7100
Emergency Number: 201-796-7100
For CHEMTREC assistance, call: 800-424-9300
For International CHEMTREC assistance, call: 703-527-3887
Section 2 - Composition, Information on Ingredients
|| > 99.5 ||200-836-8
Section 3 - Hazards Identification
Appearance: clear, colorless liquid. Flash Point: -27 deg C.
Danger! Air sensitive. Oxidizes readily in air to
form unstable peroxides that may explode spontaneously. Extremely
flammable liquid and vapor. Vapor may cause flash fire. Causes severe
eye irritation. Lachrymator (substance which increases the flow of
tears). Causes respiratory tract irritation. May be harmful if
swallowed. May cause skin irritation. May cause cancer based on
animal studies. May cause lung damage. May cause central nervous
system depression. May cause liver and kidney damage. Marine
pollutant. Store in explosion-proof refrigerator. Hazardous
polymerization may occur.
Target Organs: Blood, kidneys, central nervous
system, liver, lungs, eyes, skin.
Potential Health Effects
Causes severe eye irritation. Vapors may cause eye irritation.
May cause transient corneal injury. Lachrymator (substance which
increases the flow of tears).
May cause skin irritation. May cause skin sensitization, an allergic
reaction, which becomes evident upon re-exposure to this material.
May cause gastrointestinal irritation with nausea, vomiting and
diarrhea. May be harmful if swallowed. May cause central nervous
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.
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
In case of contact, immediately flush eyes with plenty of water for a
t least 15 minutes. Get medical aid immediately.
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.
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.
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.
Section 5 - Fire Fighting Measures
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.
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.
Flash Point: -27 deg C ( -16.60 deg F)
Autoignition Temperature: 175 deg C ( 347.00 deg F)
Explosion Limits, Lower:4.0%
(estimated) Health: 2; Flammability: 4; Instability: 2
Section 6 - Accidental Release Measures
General Information: Use proper personal protective equipment as indicated
in Section 8.
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
Ground and bond containers when transferring material. Do not
breathe dust, mist, or vapor. 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. Keep away from
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.
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
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
||OSHA - Final PELs|
25 ppm Ceiling
2000 ppm IDLH
200 ppm TWA; 360 mg/m3 TWA
OSHA Vacated PELs:
100 ppm TWA; 180 mg/m3 TWA
Personal Protective Equipment
Wear chemical splash goggles.
Wear appropriate protective gloves to prevent skin
Wear appropriate protective clothing to prevent skin
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
Appearance: clear, colorless
Odor: pungent odor - fruity odor
pH: Not available.
Vapor Pressure: 750 mm Hg @ 20 deg C
Vapor Density: 1.52
Viscosity: Not available.
Boiling Point: 21 deg C
Freezing/Melting Point:-123 deg C
Decomposition Temperature:> 400 deg C
Section 10 - Stability and Reactivity
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
Draize test, rabbit,
eye: 40 mg Severe;
mouse: LC50 = 23 gm/m3/4H;
Inhalation, mouse: LC50 = 20300
Inhalation, rat: LC50 =
Inhalation, rat: LC50
= 25000 mg/m3;
Oral, mouse: LD50 =
Oral, rat: LD50 = 661
Oral, rat: LD50 = 1930
Skin, rabbit: LD50 = 3540
- ACGIH: A3 - Confirmed animal carcinogen with unknown relevance to humans
- California: carcinogen, initial date 4/1/88
- NTP: Suspect carcinogen
- IARC: Group 2B carcinogen
Inhalation, rat: TCLo = 735 ppm/6H/2Y-I (Tumorigenic -
Carcinogenic by RTECS criteria - Sense Organs and Special
Senses (Olfaction) - tumors).; Inhalation, hamster: TCLo =
2040 ppm/7H/52W-I (Tumorigenic - equivocal tumorigenic
agent by RTECS criteria - Sense Organs and Special Senses
(Olfaction) - tumors and Lungs, Thorax, or Respiration -
Oral, rat: TDLo = 4800 mg/kg (female 1-20 day(s) after
conception) Effects on Embryo or Fetus - fetotoxicity
(except death, e.g., stunted fetus) and Specific
Developmental Abnormalities - respiratory system and
hepatobiliary system.; Oral, rat: TDLo = 5040 mg/kg
(female 1-21 day(s) after conception) Specific
Developmental Abnormalities - Central Nervous Systemand
Endocrine System and Urogenital System.; Oral, rat: TDLo =
5040 mg/kg (female 1-21 day(s) after conception) Effects
on Newborn - growth statistics (e.g.%, reduced weight
Intraperitoneal, rat: TDLo = 50 mg/kg (female 12 day(s)
after conception) Fertility - post-implantation mortality
(e.g. dead and/or resorbed implants per total number of
implants).; Intravenous, mouse: TDLo = 4 gm/kg (female 6
day(s) after conception) Fertility - post-implantation
mortality (e.g. dead and/or resorbed implants per total
number of implants).
DNA Damage: Human, Lymphocyte = 1560 umol/L.; DNA
Inhibition: Human Cells - not otherwise specified = 30
mmol/L.; Mutation test systems - not otherwise specified:
= Human Cells - not otherwise specified = 30 mmol/L.; DNA
Inhibition: Human, HeLa cell = 10 mmol/L.; Cytogenetic
Analysis: Human, Leukocyte = 1000 ppm/72H (Continuous).;
Sister Chromatid Exchange: Human, Lymphocyte = 1200
umol/L.; Mutation in Mammalian Somatic Cells: Human,
Fibroblast = 5 mmol/L.
No information found
Section 12 - Ecological Information
Fish: Fathead Minnow: EC50 = 30.8-37.2 mg/L; 96 Hr; Flow-through at
21.6-23.9°C (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
No data available.
In the atmosphere it will degrade in a matter of hours by reaction
with hydroxyl radicals and photolysis. If released into water it
will rapidly biodegrade and volatilize (half-life 3 hrs for a typical
river). If spilled on land it will also rapidly evaporate and leach
into the ground where it will biodegrade.
Log P(oct) = 0.5
No information available.
Section 13 - Disposal Considerations
Chemical waste generators must determine whether a discarded chemical is classified
as a hazardous waste.
US EPA guidelines for the classification determination are listed in 40 CFR Parts 261.3.
Additionally, waste generators must consult state and local hazardous waste regulations to
ensure complete and accurate classification.
RCRA P-Series: None listed.
CAS# 75-07-0: waste
number U001 (Ignitable waste).
Section 14 - Transport Information
|Additional Info:||FLASHPOINT -39 C|
Section 15 - Regulatory Information
CAS# 75-07-0 is listed on the TSCA inventory.
Health & Safety Reporting List
None of the chemicals are on the Health & Safety Reporting List.
Chemical Test Rules
None of the chemicals in this product are under a Chemical Test Rule.
None of the chemicals are listed under TSCA Section 12b.
TSCA Significant New Use Rule
None of the chemicals in this material have a SNUR under TSCA.
CERCLA Hazardous Substances and corresponding RQs
CAS# 75-07-0: 1000 lb final RQ; 454 kg final RQ
SARA Section 302 Extremely Hazardous Substances
None of the chemicals in this product have a TPQ.
CAS # 75-07-0: immediate, delayed, fire, reactive.
This material contains Acetaldehyde
(CAS# 75-07-0, > 99.5%),which is subject to the reporting
requirements of Section 313 of SARA Title III and 40 CFR Part 373.
Clean Air Act:
CAS# 75-07-0 is listed as a hazardous air pollutant (HAP).
This material does not contain any Class 1 Ozone depletors.
This material does not contain any Class 2 Ozone depletors.
Clean Water Act:
CAS# 75-07-0 is listed as a Hazardous Substance under the CWA.
None of the chemicals in this
product are listed as Priority Pollutants under the CWA.
None of the chemicals in this
product are listed as Toxic Pollutants under the CWA.
CAS# 75-07-0 is considered highly hazardous by OSHA.
CAS# 75-07-0 can be found on the
following state right to know lists: California, New Jersey,
Pennsylvania, Minnesota, Massachusetts.
California Prop 65
The following statement(s) is(are) made in order to comply with
the California Safe Drinking Water Act:
WARNING: This product contains Acetaldehyde, a chemical known to the
state of California to cause cancer.
California No Significant Risk Level:
CAS# 75-07-0: 90 æg/day NSRL (inhalation)
European Labeling in Accordance with EC Directives
R 12 Extremely flammable.
R 36/37 Irritating to eyes and respiratory system.
R 40 Limited evidence of a carcinogenic effect.
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
Canada - DSL/NDSL
CAS# 75-07-0 is listed on Canada's DSL List.
Canada - WHMIS
This product has been classified in accordance with the hazard
criteria of the Controlled Products Regulations and the MSDS
contains all of the information required by those regulations.
Canadian Ingredient Disclosure List
CAS# 75-07-0 is listed on the Canadian Ingredient Disclosure List.
Section 16 - Additional Information
MSDS Creation Date: 1/11/2001
Revision #4 Date: 2/18/2008
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 event shall Fisher 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 Fisher has been advised of
the possibility of such damages.