Chemical Safety Data Sheet MSDS / SDS
Crotonic anhydride
Revision Date:2026-05-16Revision Number:1
Product identifier
- Product name: Crotonic anhydride
- CBnumber: CB6751209
- CAS: 623-68-7
- EINECS Number: 210-807-1
- Synonyms: CROTONIC ANHYDRIDE,(E)-but-2-enoic anhydride
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
P363 Wash contaminated clothing before reuse.
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.
P273 Avoid release to the environment.
Hazard statements
H314 Causes severe skin burns and eye damage
H400 Very toxic to aquatic life
Substance
- Product name: Crotonic anhydride
- Synonyms: CROTONIC ANHYDRIDE,(E)-but-2-enoic anhydride
- CAS: 623-68-7
- EC number: 210-807-1
- MF: C8H10O3
- MW: 154.17
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. Call in physician.
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 mediaWater Foam Carbon dioxide (CO2) Dry powder
Unsuitable extinguishing media
For this substance/mixture no limitations of extinguishing agents are given.
5.2 Special hazards arising from the substance or mixture
Carbon oxides
Combustible.
Vapors are heavier than air and may spread along floors.
Forms explosive mixtures with air on intense heating.
Development of hazardous combustion gases or vapours possible in the event of fire.
Combustible.
Vapors are heavier than air and may spread along floors.
Forms explosive mixtures with air on intense heating.
Development of hazardous combustion gases or vapours possible in the event of fire.
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.
Prevent fire extinguishing water from contaminating surface water or the ground water system.
Prevent fire extinguishing water from contaminating surface water or the ground water system.
NFPA 704
3
0
0
| HEALTH | 3 | Short exposure could cause serious temporary or moderate residual injury (e.g. liquid hydrogen, sulfuric acid, calcium hypochlorite, hexafluorosilicic acid) | |
| FIRE | 0 | Materials that will not burn under typical fire conditions, including intrinsically noncombustible materials such as concrete, stone, and sand. Materials that will not burn in air when exposed to a temperature of 820 °C (1,500 °F) for a period of 5 minutes.(e.g. Carbon tetrachloride) | |
| REACT | 0 | Normally stable, even under fire exposure conditions, and is not reactive with water (e.g. helium,N2) | |
| 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. Evacuate the danger area, observe emergency procedures, consult an expert.
For personal protection see section 8.
For personal protection see section 8.
6.2 Environmental precautions
Do not let product enter drains.
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
For precautions see section 2.2.
7.2 Conditions for safe storage, including any incompatibilities
Storage conditionsTightly closed.
Recommended storage temperature see product label.
Storage class
Recommended storage temperature see product label.
Storage class (TRGS 510): 8A: Combustible, corrosive hazardous materials
8.1 Control parameters
Ingredients with workplace control parametersContains no substances with occupational exposure limit values.
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
This recommendation applies only to the product stated in the safety data sheet, supplied by us and for the designated use. When dissolving in or mixing with other substances and under conditions deviating from those stated in EN 16523-1 please contact the supplier of CE-approved gloves (e.g. KCL GmbH, D-36124 Eichenzell,
Internet: www.kcl.de).
Full contact
Material: butyl-rubber
Minimum layer thickness: 0.7 mm
Break through time: 480 min
Material tested:Butoject® (KCL 898)
This recommendation applies only to the product stated in the safety data sheet, supplied by us and for the designated use. When dissolving in or mixing with other substances and under conditions deviating from those stated in EN 16523-1 please contact the supplier of CE-approved gloves (e.g. KCL GmbH, D-36124 Eichenzell,
Internet: www.kcl.de).
Splash contact
Material: Nitrile rubber
Minimum layer thickness: 0.40 mm
Break through time: 30 min
Material tested:Camatril® (KCL 730 / Aldrich Z677442, Size M)
Body Protection
Internet: www.kcl.de).
Full contact
Material: butyl-rubber
Minimum layer thickness: 0.7 mm
Break through time: 480 min
Material tested:Butoject® (KCL 898)
This recommendation applies only to the product stated in the safety data sheet, supplied by us and for the designated use. When dissolving in or mixing with other substances and under conditions deviating from those stated in EN 16523-1 please contact the supplier of CE-approved gloves (e.g. KCL GmbH, D-36124 Eichenzell,
Internet: www.kcl.de).
Splash contact
Material: Nitrile rubber
Minimum layer thickness: 0.40 mm
Break through time: 30 min
Material tested:Camatril® (KCL 730 / Aldrich Z677442, Size M)
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.
Information on basic physicochemical properties
- a) Physical stateliquid
- b) Coloryellow
- c) Odorstinging
- d) Melting point/freezing pointMelting point: -20 °C
- e) Initial boiling point and boiling range250 °C
- f) Flammability (solid, gas)No data available
- g) Upper/lower flammability or explosive limitsNo data available
- h) Flash point113 °C
- i) Autoignition temperatureNo data available
- j) Decomposition temperatureNo data available
- k) pHNo data available
- l) ViscosityViscosity, kinematic: No data available
Viscosity, dynamic: 3 mPa.s at 20 °C - m) Water solubilityat 20 °C (decomposition)
- n) Partition coefficient n-octanol/waterlog Pow: 0.96 - Bioaccumulation is not expected.
- o) Vapor pressure1 hPa at 25 °C
- p) Density1.04 g/cm3 at 20 °C
- Relative density1.04 g/mL at 25 °C(lit.)
- q) Relative vapor densityNo data available
- r) Particle characteristicsNo data available
- s) Explosive propertiesNot classified as explosive.
- t) Oxidizing propertiesnone
- Solubilitysoluble in Ether
9.2 Other safety information
No data available
10.1 Chemical stability
The product is chemically stable under standard ambient conditions (room temperature) .
10.2 Possibility of hazardous reactions
alkalines
Strong oxidizing agents
Strong oxidizing agents
10.3 Conditions to avoid
Strong heating.
A range from approx. 15 Kelvin below the flash point is to be rated as critical.
Exposure to moisture.
Strong heating.
A range from approx. 15 Kelvin below the flash point is to be rated as critical.
Exposure to moisture.
Strong heating.
10.4 Incompatible materials
No data available
10.5 Hazardous decomposition products
In the event of fire: see section 5
11.1 Information on toxicological effects
Acute toxicityLD50 Oral - Rat - 2,061 mg/kg (OECD Test Guideline 401)
Oral: No data available
Inhalation: No data available
Dermal: No data available
Skin corrosion/irritation
Oral: No data available
Inhalation: No data available
Dermal: No data available
Remarks: No data available
Serious eye damage/eye irritation
Remarks: No data available
Respiratory or skin sensitization
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 (trans-crotonic anhydride)
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, Vomiting, To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated. (trans-crotonic anhydride)
12.1 Toxicity
Toxicity to fish LC50 - Danio rerio (zebra fish) - 0.5 - 1 mg/l - 96 h
Remarks: (External MSDS)
No data available
Toxicity to bacteria Remarks: (External MSDS)
Remarks: (External MSDS)
No data available
Toxicity to bacteria Remarks: (External MSDS)
12.2 Persistence and degradability
Biodegradability (OECD Test Guideline 302B)
Remarks: OECD Test Guideline 302B
Remarks: OECD Test Guideline 302B
12.3 Bioaccumulative potential
No data available
12.4 Mobility in soil
No data available (trans-crotonic anhydride)
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
Discharge into the environment must be avoided.
No data available
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: 3265
IMDG: 3265
IATA-DGR: 3265
IMDG: 3265
IATA-DGR: 3265
14.2 UN proper shipping name
ADR/RID: CORROSIVE LIQUID, ACIDIC, ORGANIC, N.O.S. (trans-crotonic anhydride, cis-crotonic anhydride)
IMDG: CORROSIVE LIQUID, ACIDIC, ORGANIC, N.O.S. (trans-crotonic anhydride, cis-crotonic anhydride)
IATA-DGR: Corrosive liquid, acidic, organic, n.o.s. (trans-crotonic anhydride, cis-crotonic anhydride)
IMDG: CORROSIVE LIQUID, ACIDIC, ORGANIC, N.O.S. (trans-crotonic anhydride, cis-crotonic anhydride)
IATA-DGR: Corrosive liquid, acidic, organic, n.o.s. (trans-crotonic anhydride, cis-crotonic anhydride)
14.3 Transport hazard class(es)
ADR/RID: 8
IMDG: 8
IATA-DGR: 8
IMDG: 8
IATA-DGR: 8
14.4 Packaging group
ADR/RID: II
IMDG: II
IATA-DGR: II
IMDG: II
IATA-DGR: II
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
15.1 Safety, health and environmental regulations/legislation specific for the substance or mixture
National regulatory information
Measures on the Environmental Administration of New Chemical Substances Registration
Registration/Notification number : B1A222212707 B1A222222481
Downstream users need to comply with the conditions of safe use of the chemical, understand the environmental and health hazard and risk management measures identified on the SDS as well as the local/national regulations concerning the chemical.
Other regulations
Please pay attention on the waste treatment should also comply with local regulations requirement.
Measures on the Environmental Administration of New Chemical Substances Registration
Registration/Notification number : B1A222212707 B1A222222481
Downstream users need to comply with the conditions of safe use of the chemical, understand the environmental and health hazard and risk management measures identified on the SDS as well as the local/national regulations concerning the chemical.
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.