Chemical Safety Data Sheet MSDS / SDS
Trimethylaluminium
Revision Date:2026-03-21Revision Number:1
Product identifier
- Product name: Trimethylaluminium
- CBnumber: CB5374238
- CAS: 75-24-1
- EINECS Number: 200-853-0
- Synonyms: TRIMETHYLALUMINUM;TRIMETHYLALUMINIUM
Relevant identified uses of the substance or mixture and uses advised against
- Relevant identified uses: For R&D use only. Not for medicinal, household or other use.
- Uses advised against: none
Company Identification
- Company: Chemicalbook
- Address: Building 1, Huihuang International, Shangdi 10th Street, Haidian District, Beijing
- Telephone: 010-86108875
GHS Label elements, including precautionary statements
-
Symbol(GHS)
- Signal wordDanger
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P231+P232 Handle under inert gas. Protect from moisture.
P222 Do not allow contact with air.
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
Hazard statements
H314 Causes severe skin burns and eye damage
H260 In contact with water releases flammable gases which may ignite spontaneously
H250 Catches fire spontaneously if exposed to air
Substance
- Product name: Trimethylaluminium
- Synonyms: TRIMETHYLALUMINUM;TRIMETHYLALUMINIUM
- CAS: 75-24-1
- EC number: 200-853-0
- MF: C3H9Al
- MW: 72.09
4.1 Description of first-aid measures
General adviceFirst aiders need to protect themselves. Show this material safety data sheet to the doctor in attendance.
If inhaled
After inhalation: fresh air. Immediately call in physician. If breathing stops: immediately apply artificial respiration, if necessary also oxygen.
In case of skin contact
In case of skin contact: Take off immediately all contaminated clothing. Rinse skin with water/ shower. Call a physician immediately.
In case of eye contact
After eye contact: rinse out with plenty of water. Immediately call in ophthalmologist.
Remove contact lenses.
If swallowed
Remove contact lenses.
After swallowing: make victim drink water (two glasses at most), avoid vomiting (risk of perforation). Call a physician immediately. Do not attempt to neutralise.
4.2 Most important symptoms and effects, both acute and delayed
The most important known symptoms and effects are described in the labelling (see section 2) and/or in section 11
4.3 Indication of any immediate medical attention and special treatment needed
No data available
4.4 Notes to physician
No data available
5.1 Extinguishing media
Suitable extinguishing mediaCarbon dioxide (CO2) Dry powder
Unsuitable extinguishing media
Water Foam
5.2 Special hazards arising from the substance or mixture
Carbon oxides
Hydrogen chloride gas
Aluminum oxide
Combustible.
Pay attention to flashback.
May not get in touch with: Water
Development of hazardous combustion gases or vapours possible in the event of fire.
Forms explosive mixtures with air at ambient temperatures.
Hydrogen chloride gas
Aluminum oxide
Combustible.
Pay attention to flashback.
May not get in touch with: Water
Development of hazardous combustion gases or vapours possible in the event of fire.
Forms explosive mixtures with air at ambient temperatures.
5.3 Advice for firefighters
Stay in danger area only with self-contained breathing apparatus. Prevent skin contact by keeping a safe distance or by wearing suitable protective clothing.
Remove container from danger zone and cool with water. Suppress (knock down) gases/vapors/mists with a water spray jet. Prevent fire extinguishing water from contaminating surface water or the ground water system.
Remove container from danger zone and cool with water. Suppress (knock down) gases/vapors/mists with a water spray jet. Prevent fire extinguishing water from contaminating surface water or the ground water system.
NFPA 704
3
3
| HEALTH | |||
| FIRE | 3 | Liquids and solids (including finely divided suspended solids) that can be ignited under almost all ambient temperature conditions . Liquids having a flash point below 22.8 °C (73 °F) and having a boiling point at or above 37.8 °C (100 °F) or having a flash point between 22.8 and 37.8 °C (73 and 100 °F). (e.g. gasoline, acetone) | |
| REACT | 3 | Capable of detonation or explosive decomposition but requires a strong initiating source, must be heated under confinement before initiation, reacts explosively with water, or will detonate if severely shocked (e.g. ammonium nitrate, cesium, hydrogen peroxide) | |
| SPEC. HAZ. |
6.1 Personal precautions, protective equipment and emergency procedures
Advice for non-emergency personnel: Do not breathe vapors, aerosols. Avoid substance contact. Ensure adequate ventilation. Keep away from heat and sources of ignition.
Evacuate the danger area, observe emergency procedures, consult an expert.
For personal protection see section 8.
Evacuate the danger area, observe emergency procedures, consult an expert.
For personal protection see section 8.
6.2 Environmental precautions
Do not let product enter drains. Risk of explosion.
6.3 Methods and materials for containment and cleaning up
Cover drains. Collect, bind, and pump off spills. Observe possible material restrictions (see sections 7 and 10). Take up with liquid-absorbent material (e.g. Chemizorb® ).
Dispose of properly. Clean up affected area.
Dispose of properly. Clean up affected area.
6.4 Reference to other sections
For disposal see section 13.
7.1 Precautions for safe handling
Advice on safe handlingWork under hood. Do not inhale substance/mixture. Avoid generation of vapours/aerosols.
Keep workplace dry. Do not allow product to come into contact with water.
Advice on protection against fire and explosion
Keep workplace dry. Do not allow product to come into contact with water.
Keep away from open flames, hot surfaces and sources of ignition.Take precautionary measures against static discharge.
Hygiene measures
Immediately change contaminated clothing. Apply preventive skin protection. Wash hands and face after working with substance.
For precautions see section 2.2.
For precautions see section 2.2.
7.2 Conditions for safe storage, including any incompatibilities
Storage conditionsTightly closed. Keep away from heat and sources of ignition.
Never allow product to get in contact with water during storage.
Air sensitive. Handle and store under inert gas.
Storage class
Never allow product to get in contact with water during storage.
Air sensitive. Handle and store under inert gas.
Storage class (TRGS 510): 4.2: Pyrophoric and self-heating hazardous materials
8.1 Control parameters
Ingredients with workplace control parameters| ['Component', 'CAS-No.', 'Value', 'Control\nparameters', 'Basis'] | ['chlorobenzene', '108-90-7', 'PC-TWA', '50 mg/m3', 'Occupational exposure limits for\nhazardous agents in the\nworkplace - Chemical\nhazardous agents.'] |
|---|
| ['Component', 'CAS-No.', 'Parameters', 'Value', 'Biological\nspecimen', 'Basis'] | ['chlorobenzene', '108-90-7', '4-\nChlorocatec\nhol', '100mg/g\ncreatinin\ne', 'Urine', 'ACGIH -\nBiological\nExposure Indices\n(BEI)'] | ['', 'Remarks', 'End of shift at end of workweek', None, None, None] | ['', '', 'p-\nChlorophen\nol', '20mg/g\ncreatinin\ne', 'Urine', 'ACGIH -\nBiological\nExposure Indices\n(BEI)'] | ['', '', 'End of shift at end of workweek', None, None, None] |
|---|
8.2 Exposure controls
Appropriate engineering controlsImmediately change contaminated clothing. Apply preventive skin protection. Wash hands and face after working with substance.
Personal protective equipment
Eye/face protection
Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Tightly fitting safety goggles
Skin protection
required
Body Protection
Flame retardant antistatic protective clothing.
Respiratory protection
required when vapours/aerosols are generated.
Our recommendations on filtering respiratory protection are based on the following standards: DIN EN 143, DIN 14387 and other accompanying standards relating to the used respiratory protection system.
Control of environmental exposure
Our recommendations on filtering respiratory protection are based on the following standards: DIN EN 143, DIN 14387 and other accompanying standards relating to the used respiratory protection system.
Do not let product enter drains. Risk of explosion.
Information on basic physicochemical properties
- a) Physical stateliquid
- b) Colorcolorless
- c) OdorCorrosive odor and "taste" may be detectable from trimethylaluminum fires
- d) Melting point/freezing pointNo data available
- e) Initial boiling point and boiling range126 °C
- f) Flammability (solid, gas)No data available
- g) Upper/lower flammability or explosive limitsNo data available
- h) Flash point< -30 °C
- i) Autoignition temperatureNo data available
- j) Decomposition temperatureNo data available
- k) pHNo data available
- l) ViscosityViscosity, kinematic: No data available
Viscosity, dynamic: No data available - m) Water solubilityREACTS
- n) Partition coefficient n-octanol/waterNo data available
- o) Vapor pressure69.3 mmHg ( 60 °C)
- p) Density1.034 g/cm3 at 20 °C
- Relative density0.81 g/mL at 25 °C
- q) Relative vapor densityNo data available
- r) Particle characteristicsNo data available
- s) Explosive propertiesNot classified as explosive.
- t) Oxidizing propertiesnone
- SolubilitySoluble in aromatic, saturated aliphatic and cycloaliphatic hydrocarbons.
9.2 Other safety information
No data available
10.1 Chemical stability
Sensitive to air. sensitive to moisture
10.2 Possibility of hazardous reactions
No data available
10.3 Conditions to avoid
Exposure to air.
Warming.
Moisture.
Warming.
Moisture.
10.4 Incompatible materials
Oxidizing agents, Strong oxidizing agents, Oxygen, Alcohols, acids, Halogens
10.5 Hazardous decomposition products
In the event of fire: see section 5
11.1 Information on toxicological effects
Mixture Acute toxicityOral: No data available
Acute toxicity estimate Oral - 2,907 mg/kg (Calculation method)
Symptoms: If ingested, severe burns of the mouth and throat, as well as a danger of perforation of the esophagus and the stomach.
Acute toxicity estimate Inhalation - 4 h - 18.1 mg/l - vapor(Calculation method)
Symptoms: mucosal irritations, Cough, Shortness of breath, Possible damages:, damage of respiratory tract
Dermal: No data available
Skin corrosion/irritation
Acute toxicity estimate Oral - 2,907 mg/kg (Calculation method)
Symptoms: If ingested, severe burns of the mouth and throat, as well as a danger of perforation of the esophagus and the stomach.
Acute toxicity estimate Inhalation - 4 h - 18.1 mg/l - vapor(Calculation method)
Symptoms: mucosal irritations, Cough, Shortness of breath, Possible damages:, damage of respiratory tract
Dermal: No data available
Remarks: Mixture causes burns.
Serious eye damage/eye irritation
Remarks: Mixture causes serious eye damage.
Risk of blindness!
Respiratory or skin sensitization
Risk of blindness!
Classified based on available data. For more details, see section 2
Germ cell mutagenicity
Classified based on available data. For more details, see section 2
Carcinogenicity
Classified based on available data. For more details, see section 2
Reproductive toxicity
Classified based on available data. For more details, see section 2
Specific target organ toxicity - single exposure
Classified based on available data. For more details, see section 2
Specific target organ toxicity - repeated exposure
Classified based on available data. For more details, see section 2
Aspiration hazard
Classified based on available data. For more details, see section 2
11.2 Additional Information
Material is extremely destructive to tissue of the mucous membranes and upper respiratory tract, eyes, and skin., spasm, inflammation and edema of the larynx, spasm, inflammation and edema of the bronchi, pneumonitis, pulmonary edema, burning sensation, Cough, wheezing, laryngitis, Shortness of breath, Headache, Nausea
Other dangerous properties can not be excluded.
Handle in accordance with good industrial hygiene and safety practice.
Components chlorobenzene
Other dangerous properties can not be excluded.
Handle in accordance with good industrial hygiene and safety practice.
Acute toxicity
LD50 Oral - Rat - male and female - > 2,000 mg/kg (OECD Test Guideline 401)
LC50 Inhalation - Rat - male - 4 h - 15.57 mg/l - vapor (OECD Test Guideline 403)
Dermal: No data available
LC50 Inhalation - Rat - male - 4 h - 15.57 mg/l - vapor (OECD Test Guideline 403)
Dermal: No data available
Skin corrosion/irritation
Skin - Rabbit
Result: Skin irritation - 4 h (OECD Test Guideline 404)
Result: Skin irritation - 4 h (OECD Test Guideline 404)
Serious eye damage/eye irritation
Eyes - Rabbit
Result: No eye irritation (OECD Test Guideline 405)
Result: No eye irritation (OECD Test Guideline 405)
Respiratory or skin sensitization
Local lymph node assay (LLNA) - Mouse
Result: negative (OECD Test Guideline 429)
Result: negative (OECD Test Guideline 429)
Germ cell mutagenicity
Test Type: Ames test
Test system: Salmonella typhimurium
Result: negative
Test Type: Mutagenicity (mammal cell test):
Test system: Chinese hamster lung cells
Result: negative
Test Type: Mutagenicity (mammal cell test): chromosome aberration.
Test system: Chinese hamster ovary cells
Result: negative
Test system: Salmonella typhimurium
Result: negative
Test Type: Mutagenicity (mammal cell test):
Test system: Chinese hamster lung cells
Result: negative
Test Type: Mutagenicity (mammal cell test): chromosome aberration.
Test system: Chinese hamster ovary cells
Result: negative
Carcinogenicity
Classified based on available data. For more details, see section 2
Reproductive toxicity
Classified based on available data. For more details, see section 2
Specific target organ toxicity - single exposure
Classified based on available data. For more details, see section 2
Specific target organ toxicity - repeated exposure
Classified based on available data. For more details, see section 2
Aspiration hazard
Classified based on available data. For more details, see section 2
Trimethylaluminium Acute toxicity
Oral: No data available
Inhalation: No data available
Dermal: No data available
Skin corrosion/irritation
Inhalation: No data available
Dermal: No data available
Remarks: Causes skin burns.
Classified according to Regulation (EU) 1272/2008, Annex VI (Table 3.1/3.2)
Serious eye damage/eye irritation
Classified according to Regulation (EU) 1272/2008, Annex VI (Table 3.1/3.2)
Remarks: Causes serious eye damage.
Classified according to Regulation (EU) 1272/2008, Annex VI (Table 3.1/3.2)
Respiratory or skin sensitization
Classified according to Regulation (EU) 1272/2008, Annex VI (Table 3.1/3.2)
Classified based on available data. For more details, see section 2
Germ cell mutagenicity
Classified based on available data. For more details, see section 2
Carcinogenicity
Classified based on available data. For more details, see section 2
Reproductive toxicity
Classified based on available data. For more details, see section 2
Specific target organ toxicity - single exposure
Classified based on available data. For more details, see section 2
Specific target organ toxicity - repeated exposure
Classified based on available data. For more details, see section 2
Aspiration hazard
Classified based on available data. For more details, see section 2
12.1 Toxicity
MixtureNo data available
12.2 Persistence and degradability
No data available
12.3 Bioaccumulative potential
No data available
12.4 Mobility in soil
No data available
12.5 Results of PBT and vPvB assessment
PBT/vPvB assessment not available as chemical safety assessment not required/not conducted
12.6 Endocrine disrupting properties
No data available
12.7 Other adverse effects
No data available
Components chlorobenzene
Toxicity to fish static test LC50 - Lepomis macrochirus (Bluegill sunfish) - 4.5 mg/l - 96 h
Remarks: (ECHA)
Toxicity to daphnia static test EC50 - Daphnia magna (Water flea) - 26 mg/l - 48 h and other aquatic (OECD Test Guideline 202) invertebrates
Toxicity to algae static test EC10 - Desmodesmus subspicatus (green algae) - 5.8 mg/l - 72 h (OECD Test Guideline 201) static test ErC50 - Desmodesmus subspicatus (green algae) - 11.4 mg/l - 72 h (OECD Test Guideline 201)
Toxicity to bacteria static test EC50 - activated sludge - 140 mg/l - 30 min (OECD Test Guideline 209)
Toxicity to semi-static test NOEC - Danio rerio (zebra fish) - 4.8 mg/l - 28 fish(Chronic toxicity) d (OECD Test Guideline 210)
Toxicity to daphnia flow-through test NOEC - Daphnia magna (Water flea) - 0.72 and other aquatic mg/l - 21 d invertebrates(Chronic (OECD Test Guideline 211) toxicity)
Trimethylaluminium
Remarks: (ECHA)
Toxicity to daphnia static test EC50 - Daphnia magna (Water flea) - 26 mg/l - 48 h and other aquatic (OECD Test Guideline 202) invertebrates
Toxicity to algae static test EC10 - Desmodesmus subspicatus (green algae) - 5.8 mg/l - 72 h (OECD Test Guideline 201) static test ErC50 - Desmodesmus subspicatus (green algae) - 11.4 mg/l - 72 h (OECD Test Guideline 201)
Toxicity to bacteria static test EC50 - activated sludge - 140 mg/l - 30 min (OECD Test Guideline 209)
Toxicity to semi-static test NOEC - Danio rerio (zebra fish) - 4.8 mg/l - 28 fish(Chronic toxicity) d (OECD Test Guideline 210)
Toxicity to daphnia flow-through test NOEC - Daphnia magna (Water flea) - 0.72 and other aquatic mg/l - 21 d invertebrates(Chronic (OECD Test Guideline 211) toxicity)
No data available
13.1 Waste treatment methods
Product
Offer surplus and non-recyclable solutions to a licensed disposal company.
Offer surplus and non-recyclable solutions to a licensed disposal company.
14.1 UN number
ADR/RID: 3399
IMDG: 3399
IATA-DGR: 3399
IMDG: 3399
IATA-DGR: 3399
14.2 UN proper shipping name
ADR/RID: ORGANOMETALLIC SUBSTANCE, LIQUID, WATER-REACTIVE, FLAMMABLE (chlorobenzene, Trimethylaluminium) (chlorobenzene, Trimethylaluminium)
IMDG: ORGANOMETALLIC SUBSTANCE, LIQUID, WATER-REACTIVE, FLAMMABLE (Trimethylaluminium, chlorobenzene) (Trimethylaluminium, chlorobenzene)
IATA-DGR: Organometallic substance, liquid, water-reactive, flammable (Trimethylaluminium, chlorobenzene) (Trimethylaluminium, chlorobenzene)
Passenger Aircraft: Not permitted for transport
IMDG: ORGANOMETALLIC SUBSTANCE, LIQUID, WATER-REACTIVE, FLAMMABLE (Trimethylaluminium, chlorobenzene) (Trimethylaluminium, chlorobenzene)
IATA-DGR: Organometallic substance, liquid, water-reactive, flammable (Trimethylaluminium, chlorobenzene) (Trimethylaluminium, chlorobenzene)
Passenger Aircraft: Not permitted for transport
14.3 Transport hazard class(es)
ADR/RID: 4.3 (3)
IMDG: 4.3 (3)
IATA-DGR: 4.3 (3)
IMDG: 4.3 (3)
IATA-DGR: 4.3 (3)
14.4 Packaging group
ADR/RID: I
IMDG: I
IATA-DGR: I
IMDG: I
IATA-DGR: I
14.5 Environmental hazards
ADR/RID: yes
IMDG Marine pollutant: yes
IATA-DGR: no
IMDG Marine pollutant: yes
IATA-DGR: no
14.6 Special precautions for user
Based on chemical properties, choose appropriate tools and conditions of transport.
Transporting tools shall be equipped with appropriate and sufficient firefighting equipment and emergency leaking installations. If transporting by road, please go along the specified route.
Transporting tools shall be equipped with appropriate and sufficient firefighting equipment and emergency leaking installations. If transporting by road, please go along the specified route.
14.7 Incompatible materials
Oxidizing agents, Strong oxidizing agents, Oxygen, Alcohols, acids, Halogens
15.1 Safety, health and environmental regulations/legislation specific for the substance or mixture
National regulatory information
Law on the Prevention and Control of Occupational Diseases
Regulations on Safety Management of Hazardous Chemicals
Catalogue of Hazardous Chemicals : Listed
Other regulations
Please pay attention on the waste treatment should also comply with local regulations requirement.
Law on the Prevention and Control of Occupational Diseases
Regulations on Safety Management of Hazardous Chemicals
Catalogue of Hazardous Chemicals : Listed
Other regulations
Please pay attention on the waste treatment should also comply with local regulations requirement.
Abbreviations and acronyms
CAS: Chemical Abstracts Service
TWA: Time-Weighted Average
STEL: Short-Term Exposure Limit
LD50: Lethal Dose 50%
LC50: Lethal Concentration 50%
EC50: Effective Concentration 50%
PEL: Permissible Exposure Limit
TLV: Threshold Limit Value
IMDG: International Maritime Dangerous Goods Code
IATA: International Air Transport Association
ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
DOT: US Department of Transportation
NFPA: National Fire Protection Association
NIOSH: National Institute for Occupational Safety and Health
OSHA: Occupational Safety and Health Administration
TWA: Time-Weighted Average
STEL: Short-Term Exposure Limit
LD50: Lethal Dose 50%
LC50: Lethal Concentration 50%
EC50: Effective Concentration 50%
PEL: Permissible Exposure Limit
TLV: Threshold Limit Value
IMDG: International Maritime Dangerous Goods Code
IATA: International Air Transport Association
ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
DOT: US Department of Transportation
NFPA: National Fire Protection Association
NIOSH: National Institute for Occupational Safety and Health
OSHA: Occupational Safety and Health Administration
Disclaimer:
The information in this MSDS is only applicable to the specified product, unless otherwise specified, it is not applicable to the mixture of this product and other substances. This MSDS only provides information on the safety of the product for those who have received the appropriate professional training for the user of the product. Users of this MSDS must make independent judgments on the applicability of this SDS. The authors of this MSDS will not be held responsible for any harm caused by the use of this MSDS.
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