Chemical Safety Data Sheet MSDS / SDS
Bentazone
Revision Date:2026-04-11Revision Number:1
Product identifier
- Product name: Bentazone
- CBnumber: CB7235319
- CAS: 25057-89-0
- EINECS Number: 246-585-8
- Synonyms: BENTAZONE,Bentazon
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 wordWarning
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P302+P352 IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
Hazard statements
H302 Harmful if swallowed
H317 May cause an allergic skin reaction
H319 Causes serious eye irritation
H412 Harmful to aquatic life with long lasting effects
Substance
- Product name: Bentazone
- Synonyms: BENTAZONE,Bentazon
- CAS: 25057-89-0
- EC number: 246-585-8
- MF: C10H12N2O3S
- MW: 240.28
4.1 Description of necessary first-aid measures
General adviceno data available
If inhaled
Fresh air, rest. Refer for medical attention.
Following skin contact
Remove contaminated clothes. Rinse and then wash skin with water and soap.
Following eye contact
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Following ingestion
Give one or two glasses of water to drink. Refer for medical attention .
4.2 Most important symptoms/effects, acute and delayed
Skin decontamination: Skin contamination should he treated promptly by washing with soap and water. Contamination of the eyes should be treated immediately by prolonged flushing of the eyes with large amounts of clean water. If dermal or ocular irritation persists, medical attention should be, obtained without delay.
4.3 Indication of immediate medical attention and special treatment needed, if necessary
no data available
5.1 Extinguishing media
Use water spray, powder, foam, carbon dioxide.
5.2 Specific hazards arising from the chemical
Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire. Risk of fire and explosion if formulations contain flammable/explosive solvents.
5.3 Special protective actions for fire-fighters
Use water spray, powder, foam, carbon dioxide.
NFPA 704
2
0
0
| HEALTH | 2 | Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury (e.g. diethyl ether, ammonium phosphate, iodine) | |
| 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
Do NOT wash away into sewer. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. Personal protection: chemical protection suit including self- contained breathing apparatus.
6.2 Environmental precautions
Do NOT wash away into sewer. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. Personal protection: chemical protection suit including self- contained breathing apparatus.
6.3 Methods and materials for containment and cleaning up
Collect and arrange disposal. Keep the chemical in suitable and closed containers for disposal. Remove all sources of ignition. Use spark- proof tools and explosion-proof equipment. Adhered or collected material should be promptly disposed of, in accordance with appropriate laws and regulations.
7.1 Precautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
7.2 Conditions for safe storage, including any incompatibilities
Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs.Avoid freezing.
8.1 Control parameters
Occupational Exposure limit valuesno data available
Biological limit values
no data available
8.2 Appropriate engineering controls
Ensure adequate ventilation. Handle in accordance with good industrial hygiene and safety practice. Set up emergency exits and the riskelimination area.
8.3 Individual protection measures, such as personal protective equipment (PPE)
Eye/face protectionWear safety goggles.
Skin protection
Protective gloves.
Respiratory protection
Avoid inhalation of dust and mist. Use local exhaust or breathing protection.
Thermal hazards
no data available
Information on basic physicochemical properties
- Water solubility0.5g/L(20 ºC)
- Physical stateCOLOURLESS-TO-WHITE CRYSTALLINE POWDER.
- ColorColorless crystals
- OdourODORLESS
- Melting point/ freezing point137-139°C
- Boilingpoint or initial boiling point and boiling range395.7°C at 760 mmHg
- FlammabilityLiquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire.
- Lower and upper explosion limit/flammability limitno data available
- Flash point193.1°C
- Auto-ignition temperatureno data available
- Decomposition temperature200°C
- pHno data available
- Kinematic viscosityno data available
- SolubilityDMSO: Soluble,
- N-octanol-water partition coefficientlog Kow = 2.80
- Vapour pressure1.8E-06mmHg at 25°C
- Density and/ or relative density1.345 g/cm3
- Relative vapour densityno data available
- Particle characteristicsno data available
10.1 Reactivity
Decomposes on heating and on burning. This produces toxic fumes including sulfur oxides and nitrogen oxides.
10.2 Chemical stability
Not decomposed by sunlight
10.3 Possibility of hazardous reactions
Decomposes on heating and on burning. This produces toxic fumes including sulfur oxides and nitrogen oxides.
10.4 Conditions to avoid
no data available
10.5 Incompatible materials
no data available
10.6 Hazardous decomposition products
When heated to decomposition it emits very toxic fumes of /sulfur oxides and nitrogen oxides/.
Acute toxicity
OralLD50 Mouse oral 400 mg/kg
Inhalation
Classified based on available data. For more details, see section 2
Dermal
LD50 Rat acute percutaneous >2500 mg/kg
Skin corrosion/irritation
Classified based on available data. For more details, see section 2
Serious eye damage/irritation
Classified based on available data. For more details, see section 2
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
Cancer ClassificationGroup E Evidence of Non-carcinogenicity for Humans
Reproductive toxicity
Classified based on available data. For more details, see section 2
STOT-single exposure
The substance is irritating to the eyes.
STOT-repeated exposure
Classified based on available data. For more details, see section 2
Aspiration hazard
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly on spraying or when dispersed, especially if powdered.
12.1 Toxicity
Toxicity to fishno data available
Toxicity to daphnia and other aquatic invertebrates
no data available
Toxicity to algae
no data available
Toxicity to microorganisms
no data available
12.2 Persistence and degradability
Bentazon can be rapidly utilized by bacteria and fungi(1). Bentazon was degraded in 8 soils with half-lives ranging from 6.7 to 15 days, and 38 to 50 days, for soils with and without a history of bentazon application, respectively(2), which suggests acclimation(SRC). In aerobic soil incubation experiments, approximately 80% of the initial bentazon applied remained after 28 days in sandy clay loam soil, in clay soil there was no significant conversion of bentazon after 30 days incubation(3). The aerobic half-life in freshly collected field soils ranged from 11 to 14 days(4,5). The average half-life of bentazon in laboratory soils was about 46 days(4,5).
12.3 Bioaccumulative potential
An estimated BCF of 79 was calculated for bentazon(SRC), using an experimental log Kow of 2.8(1) and a regression-derived equation(2).
According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is moderate.
According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is moderate.
12.4 Mobility in soil
Soil adsorption coefficient0 (Experimental); 140 (Calculated). From table
12.5 Other adverse effects
no data available
13.1 Disposal methods
Product
The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing.
Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.
Contaminated packaging
The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing.
Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.
Containers can be triply rinsed (or equivalent) and offered for recycling or reconditioning. Alternatively, the packaging can be punctured to make it unusable for other purposes and then be disposed of in a sanitary landfill. Controlled incineration with flue gas scrubbing is possible for combustible packaging materials.
14.1 UN Number
no data available
14.2 UN Proper Shipping Name
no data available
14.3 Transport hazard class(es)
no data available
14.4 Packing group, if applicable
no data available
14.5 Environmental hazards
no data available
14.6 Special precautions for user
no data available
14.7 Transport in bulk according to IMO instruments
no data available
15.1 Safety, health and environmental regulations specific for the product in question
European Inventory of Existing Commercial Chemical Substances (EINECS)Listed.
EC Inventory
Listed.
United States Toxic Substances Control Act (TSCA) Inventory
Listed.
China Catalog of Hazardous chemicals 2015
Not Listed.
New Zealand Inventory of Chemicals (NZIoC)
Listed.
Philippines Inventory of Chemicals and Chemical Substances (PICCS)
Listed.
Vietnam National Chemical Inventory
Listed.
Chinese Chemical Inventory of Existing Chemical Substances (China IECSC)
Listed.
Korea Existing Chemicals List (KECL)
Listed.
Abbreviations and acronyms
• CAS: Chemical Abstracts Service
• ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
• RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
• IMDG: International Maritime Dangerous Goods
• IATA: International Air Transportation Association
• TWA: Time Weighted Average
• STEL: Short term exposure limit
• LC50: Lethal Concentration 50%
• LD50: Lethal Dose 50%
• EC50: Effective Concentration 50%
• ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
• RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
• IMDG: International Maritime Dangerous Goods
• IATA: International Air Transportation Association
• TWA: Time Weighted Average
• STEL: Short term exposure limit
• LC50: Lethal Concentration 50%
• LD50: Lethal Dose 50%
• EC50: Effective Concentration 50%
References
IPCS - The International Chemical Safety Cards (ICSC), website: http://www.ilo.org/dyn/icsc/showcard.home
HSDB - Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm
IARC - International Agency for Research on Cancer, website: http://www.iarc.fr/ eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website: http://www.echemportal.
org/echemportal/index?pageID=0&request_locale=en
CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple
ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp
ERG - Emergency Response Guidebook by U.S. Department of Transportation, website: http://www.phmsa.dot.
gov/hazmat/library/erg
Germany GESTIS-database on hazard substance, website: http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp
ECHA - European Chemicals Agency, website: https://echa.europa.eu/
HSDB - Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm
IARC - International Agency for Research on Cancer, website: http://www.iarc.fr/ eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website: http://www.echemportal.
org/echemportal/index?pageID=0&request_locale=en
CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple
ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp
ERG - Emergency Response Guidebook by U.S. Department of Transportation, website: http://www.phmsa.dot.
gov/hazmat/library/erg
Germany GESTIS-database on hazard substance, website: http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp
ECHA - European Chemicals Agency, website: https://echa.europa.eu/
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.