Benzimidazole SDS
SECTION 1: Identification of the substance/mixture and of the company/undertaking
Product identifier
- Product name： Benzimidazole
- CAS： 51-17-2
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.in
- Address：5 vasavi Layout Basaveswara Nilayam Pragathi Nagar Hyderabad, India -500090
- Telephone：+91 9550333722
SECTION 2: Hazards identification
Classification of the substance or mixture
Acute toxicity - Category 4, Oral
GHS label elements, including precautionary statements
-
Pictogram(s)
- Signal word Warning
H302 Harmful if swallowed
P264 Wash ... thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P301+P317 IF SWALLOWED: Get medical help.
P330 Rinse mouth.
none
P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Other hazards which do not result in classification
no data available
SECTION 3: Composition/information on ingredients
Substance
- Chemical name: Benzimidazole
- Common names and synonyms: Benzimidazole
- CAS number: 51-17-2
- EC number: 200-081-4
- Concentration: 100%
SECTION 4: First aid measures
Description of necessary first-aid measures
Move the victim into fresh air. If breathing is difficult, give oxygen. If not breathing, give artificial respiration and consult a doctor immediately. Do not use mouth to mouth resuscitation if the victim ingested or inhaled the chemical.
Take off contaminated clothing immediately. Wash off with soap and plenty of water. Consult a doctor.
Rinse with pure water for at least 15 minutes. Consult a doctor.
Rinse mouth with water. Do not induce vomiting. Never give anything by mouth to an unconscious person. Call a doctor or Poison Control Center immediately.
Most important symptoms/effects, acute and delayed
ACUTE/CHRONIC HAZARDS: When heated to decomposition this compound emits highly toxic fumes. (NTP, 1992)
Indication of immediate medical attention and special treatment needed, if necessary
Benzimidazoles have only limited solubility in water; consequently, minor differences in solubility tend to have a major effect on absorption. Thiabenzole is rapidly absorbed after oral ingestion ... Most of the drug is excreted in the urine ... as 5-hydroxythiabendazole . In contrast tablet forms of mebendazole are poorly and erratically absorbed ... And is extensively metabolized. ... Like mebendazole, albendazole is variably and erratically absorbed after oral administration, although its absorbtion may be increased when it is given with a fatty meal.
SECTION 5: Firefighting measures
Suitable extinguishing media
Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher. (NTP, 1992)
Specific hazards arising from the chemical
Flash point data for this chemical are not available. It is probably combustible. (NTP, 1992)
Special protective actions for fire-fighters
Wear self-contained breathing apparatus for firefighting if necessary.
SECTION 6: Accidental release measures
Personal precautions, protective equipment and emergency procedures
Avoid dust formation. Avoid breathing mist, gas or vapours.Avoid contacting with skin and eye. Use personal protective equipment.Wear chemical impermeable gloves. Ensure adequate ventilation.Remove all sources of ignition. Evacuate personnel to safe areas.Keep people away from and upwind of spill/leak.
Environmental precautions
Prevent further spillage or leakage if it is safe to do so. Do not let the chemical enter drains. Discharge into the environment must be avoided.
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.
SECTION 7: Handling and storage
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.
Conditions for safe storage, including any incompatibilities
Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.
SECTION 8: Exposure controls/personal protection
Control parameters
no data available
no data available
Appropriate engineering controls
Ensure adequate ventilation. Handle in accordance with good industrial hygiene and safety practice. Set up emergency exits and the risk-elimination area.
Individual protection measures, such as personal protective equipment (PPE)
Wear tightly fitting safety goggles with side-shields conforming to EN 166(EU) or NIOSH (US).
Wear fire/flame resistant and impervious clothing. Handle with gloves. Gloves must be inspected prior to use. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.
If the exposure limits are exceeded, irritation or other symptoms are experienced, use a full-face respirator.
no data available
SECTION 9: Physical and chemical properties and safety characteristics
-
Physical state：
Solid. Crystalline powder.
-
Colour：
Off-white.
-
Odour：
no data available
-
Melting point/freezing point：
>= 158.83 - <= 166 °C. Atm. press.:977 hPa.
-
Boiling point or initial boiling point and boiling range：
> 250 °C. Atm. press.:973.4 hPa. Remarks:The heating was continued till 250°C but no bubbles emerged from the capillary.Hence, the boiling point of the test item was inferred to be greater than 250°C.
-
Flammability：
no data available
-
Lower and upper explosion limit/flammability limit：
no data available
-
Flash point：
> 250 °C. Atm. press.:976.2 hPa.
-
Auto-ignition temperature：
Remarks:Benzimidazole did not catch fire on being exposed to air at room temperature of 27°C.
-
Decomposition temperature：
no data available
-
pH：
8.11.
-
Kinematic viscosity：
no data available
-
Solubility：
>17.7 [ug/mL]
-
Partition coefficient n-octanol/water：
log Pow = 1.32. Remarks:Other details not available.
-
Vapour pressure：
0.01 Pa. Temperature:25 °C. Remarks:No other details mentioned.
-
Density and/or relative density：
0.947 g/cm3. Temperature:20 °C.
-
Relative vapour density：
no data available
-
Particle characteristics：
no data available
SECTION 10: Stability and reactivity
Reactivity
no data available
Chemical stability
High degree of chemical stability
Possibility of hazardous reactions
An amine. Neutralizes acids to form salts plus water. These acid-base reactions are exothermic. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated in combination with strong reducing agents, such as hydrides. May be shock sensitive.
Conditions to avoid
no data available
Incompatible materials
no data available
Hazardous decomposition products
Dangerous; when heated to decomposition, it emits highly toxic fumes.
SECTION 11: Toxicological information
Acute toxicity
- Oral: LD50 Mouse oral 2910 mg/kg
- Inhalation: no data available
- Dermal: no data available
Skin corrosion/irritation
no data available
Serious eye damage/irritation
no data available
Respiratory or skin sensitization
no data available
Germ cell mutagenicity
no data available
Carcinogenicity
no data available
Reproductive toxicity
no data available
STOT-single exposure
no data available
STOT-repeated exposure
no data available
Aspiration hazard
no data available
SECTION 12: Ecological information
Toxicity
- Toxicity to fish: NOEC - Salmo gairdreii, Lepomis macrochirus and Petromyzon marinus - 5 mg/L - 24 h.
- Toxicity to daphnia and other aquatic invertebrates: EC50 - Daphnia magna - 55.5 mg/L - 48 h.
- Toxicity to algae: EC50 - Desmodesmus subspicatus (previous name: Scenedesmus subspicatus) - 26.8 mg/L - 72 h.
- Toxicity to microorganisms: EC50 - Bacillus sp. - > 500 - < 1 000 mg/L - 192 h.
Persistence and degradability
AEROBIC: No wastewater degradation data for benzimidazole are available(1). Using several different water and soils as sources of inocula, and using benzimidazole as a sole carbon and energy source, no pure cultures of benzimidazole-degraders were found; furthermore, the compound did not support the growth of any bacteria that grew on benzimidazole-based fungicides(2,3). Pseudomonads and Bacillus species (both of which could degrade benzimidazole-based fungicides) were completely inhibited by benzimidazole at concentrations ranging from 500 to 1000 ug/ml, respectively(2). However, in the aerobic soil environment, benzimidazole (10 ug/g) was completely degraded in 10 days when the soils had been pre-exposed to the compound(4). This suggests that benzimidazole biodegradation is cometabolic, and likely occurs in soils as well as in natural waters.
Bioaccumulative potential
An estimated BCF of 2.1 was calculated for benzimidazole(SRC), using a log Kow of 1.32(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is low.
Mobility in soil
The Koc of benzimidazole is estimated as 110(SRC), using a log Kow of 1.32(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that benzimidazole is expected to have high mobility in neutral and basic soils. Benzimidazole's pKa of 5.3(4) indicates that it will be in the protonated form in acidic environments, and will tend to adsorb to soil particles and clays.
Other adverse effects
no data available
SECTION 13: Disposal considerations
Disposal methods
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.
SECTION 14: Transport information
UN Number
ADR/RID: Not dangerous goods. (For reference only, please check.)
IMDG: Not dangerous goods. (For reference only, please check.)
IATA: Not dangerous goods. (For reference only, please check.)
UN Proper Shipping Name
ADR/RID: Not dangerous goods. (For reference only, please check.)
IMDG: Not dangerous goods. (For reference only, please check.)
IATA: Not dangerous goods. (For reference only, please check.)
Transport hazard class(es)
ADR/RID: Not dangerous goods. (For reference only, please check.)
IMDG: Not dangerous goods. (For reference only, please check.)
IATA: Not dangerous goods. (For reference only, please check.)
Packing group, if applicable
ADR/RID: Not dangerous goods. (For reference only, please check.)
IMDG: Not dangerous goods. (For reference only, please check.)
IATA: Not dangerous goods. (For reference only, please check.)
Environmental hazards
ADR/RID: No
IMDG: No
IATA: No
Special precautions for user
no data available
Transport in bulk according to IMO instruments
no data available
SECTION 15: Regulatory information
Safety, health and environmental regulations specific for the product in question
SECTION 16: Other information
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%
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/