2-Bromotoluene

171.03

171.03

1904176

202-421-7

TBG2F2VA19

6532

1760

DTXSID2024660

COLORLESS LIQ

29036990

0

3.50

Clear colorless to light yellow Liquid

1.432 g/cm³ @ Temp: 20 °C

-27.8 °C

181.7 °C

174 °F

1.549

H2O: <0.1 g/100 mL at 15 ºC;Very soluble in ethanol, ether, and benzene

2-8°C

1.00 mm Hg @ 25 deg C /Calculated from experimentally-derived coefficients/

5.9 (Air= 1)

Oral-Mouse  LD50: 1864 mg/kg; Abdominal cavity-mouse LD50: 1358 mg/kg

Open flame is flammable; high heat emits bromide gas

Insoluble in water.

Aryl Halides

O-BROMOTOLUENE reacts with strong oxidizing agents. (NTP, 1992)

11,365.0 gcal/gmole

I; II; III

1760

3

22-36/37/38

36/37/39-37/39-26

XS7965500

Xn,Xi

Treasury is ventilated at low temperature and dry; stored separately from oxidants and food additives

Harmful/Irritant

Stable. Incompatible with strong oxidizing agents.

P261-P305 + P351 + P338

H302-H315-H319-H335

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

This chemical is combustible. (NTP, 1992)

|Warning|H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]|P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 49 companies from 8 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H227: Combustible liquid [Warning Flammable liquids]|P210, P280, P370+P378, P403+P235, and P501

Fires involving this material can be controlled with a dry chemical, carbon dioxide, or a Halon extinguisher. (NTP, 1992)

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. SPILL: Increase, in the downwind direction, as necessary, the isolation distance shown above. FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)

SMALL SPILLS AND LEAKAGE: If you spill this chemical, FIRST REMOVE ALL SOURCES OF IGNITION. Then, use absorbent paper to pick up all liquid spill material. Your contaminated clothing and absorbent paper should be sealed in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with 60-70% ethanol followed by washing with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned. STORAGE PRECAUTIONS: You should store this chemical under refrigerated temperatures, and keep it away from oxidizing materials. STORE AWAY FROM SOURCES OF IGNITION. (NTP, 1992)

RECOMMENDED RESPIRATOR: Where the neat test chemical is weighed and diluted, wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter. (NTP, 1992)

SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.

No person may /transport,/ offer or accept a hazardous material for transportation in commerce unless that person is registered in conformance ... and the hazardous material is properly classed, described, packaged, marked, labeled, and in condition for shipment as required or authorized by ... /the hazardous materials regulations (49 CFR 171-177)./|The International Maritime Dangerous Goods Code lays down basic principles for transporting hazardous chemicals. Detailed recommendations for individual substances and a number of recommendations for good practice are included in the classes dealing with such substances. A general index of technical names has also been compiled. This index should always be consulted when attempting to locate the appropriate procedures to be used when shipping any substance or article.

Irritant

| 0 - Materials that, under emergency conditions, would offer no hazard beyond that of ordinary combustible materials.| 0 - Materials that will not burn under typical fire conditions, including intrinsically noncombustible materials such as concrete, stone, and sand.| 0 - Materials that in themselves are normally stable, even under fire conditions.

The major hazards encountered in the use and handling of 2-bromotoluene stem from its toxicologic properties. Exposure to this colorless liquid may occur through inhalation or dermal contact at sites where the substance is manufactured, used as a solvent, or used as a chemical intermediate. This substance is considered to be hazardous to health with the potential to cause respiratory irritation, CNS depression, and hepatotoxicity. Entry into contaminated areas warrants the wearing of a full-face mask, self-contained breathing apparatus which provides eye protection. This substance is normally stable, even under fire exposure conditions; requiring moderate heating before ignition will occur (flash point 79 °C, closed cup). Normal procedures may be used to fight a 2-bromotoluene fire; extinguishing with water spray that blankets the fire and cools the substance below its flash point. Before transporting 2-bromotoluene, the regulatory requirements of the DOT must be consulted. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance.

moderately toxic

Bromotoluene may be released to the environment in waste streams and as emissions during its use as a solvent (for fats, waxes or resins, and as a medium for carrying out reactions) and as chemical intermediate(1,2). Use of 2-bromotoluene as a solvent may result in direct environmental release through evaporation. Environmental releases may also be possible from wastes generated at sites of production or use as a chemical intermediate(SRC).

TERRESTRIAL FATE: Based on a recommended classification scheme(1), an estimated Koc value of 443(SRC), derived from a molecular structure estimation method(2), suggests that 2-bromotoluene will have moderate mobility in soil(SRC). Its high estimated Henry's Law constant, 2.4X10-3 atm-cu m/mole(3), high vapor pressure, 1.0 mm Hg at 25 °C(5), and moderate adsorptivity to soil indicates that volatilization may be an important fate process from both moist and dry soil surfaces(4,SRC). Experimental data suggest that 2-bromotoluene may be subject to direct photolysis on the soil surface(6). 2-Bromotoluene's potential for biodegradation in soil is unknown.|AQUATIC FATE: Based on a recommended classification scheme(1), an estimated Koc value of 443(SRC) determined from molecular structure(2), indicates that 2-bromotoluene may adsorb to sediment and particulate matter in the water column(SRC). It is expected to readily volatilize from water based on its estimated Henry's Law constant of 2.4X10-3 atm-cu m/mole(3). Estimated half-lives for a model river and model lake are 4.3 hours and 5.3 days, respectively(4,SRC). Using a model which takes adsorption into account(8), the volatilization half-life of 2-bromotoluene in an environmental pond is estimated to be 14.9 days. Experimental data suggests that 2-bromotoluene may be subject to direct photolysis in surface waters(7). Its potential for biodegradation is unknown. According to a recommended classification scheme(6), an estimated BCF value of 270(4,SRC), based on its log Kow(5,SRC), suggests that bioconcentration in aquatic organisms will be moderately high(SRC).|ATMOSPHERIC FATE: According to a theory of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), 2-bromotoluene has a vapor pressure of 1.0 mm Hg at 25 °C(1). Based on this vapor pressure, 2-bromotoluene should exist entirely in the vapor phase in the ambient atmosphere(2,SRC). Vapor phase 2-bromotoluene should degrade in the atmosphere by reaction with photochemically produced hydroxyl radicals; the half-life for this reaction is estimated to be 9.8 days(3,SRC).

The rate constant for the vapor-phase reaction of 2-bromotoluene with photochemically produced hydroxyl radicals has been estimated to be 1.64X10-12 cu m/molecule-sec at 25 °C(1,SRC); assuming an average atmospheric hydroxyl radical concn of 5X10+5 molecules/cu cm, the half-life for this reaction can be estimated to be 9.8 days(1,SRC). 2-Bromotoluene does not contain any functional groups that are susceptible to aqueous environmental hydrolysis(2); therefore, hydrolysis is not expected to be significant in water(SRC). Irradiation of 2-bromotoluene (in hexane solution) with artificial UV light above 290 nm resulted in a dehalogenation of 1.03% over a two hour period(3).

A BCF of 270 was estimated for 2-bromotoluene(SRC), using its estimated log Kow of 3.43(1,SRC), and a recommended regression-derived equation(2). According to a recommended classification scheme(3), this BCF value suggests that bioconcentration in fish and aquatic organisms will be moderately high(SRC).

Using an estimation method based on molecular connectivity indices(1), the Koc for 2-bromotoluene is estimated to be 440(SRC). According to a suggested classification scheme(2), this Koc value suggests that 2-bromotoluene will have medium mobility in soil(SRC).

Based upon a quantitative structure analysis relationship (QSAR) estimation method, the Henry's Law constant of 2-bromotoluene is estimated to be 2.4X10-3 atm-cu m/mole at 25 °C(1,SRC). This value of Henry's Law constant indicates that volatilization from environmental waters is probably significant, and may be rapid(2). The volatilization half-lives of 2-bromotoluene from a model river (1 meter deep flowing 1 m/sec with a wind speed of 3 m/sec) and model lake (1 meter deep flowing at 0.05 m/sec with a wind speed of 0.5 m/sec) are estimated to be 4.3 hr and 5.3 days, respectively(2,SRC); these estimates do not consider the effect of adsorption to sediment which may be important(SRC). The volatilization half-life of 2-bromotoluene in an experimental pond which considers adsorption has been estimated to be 14.9 days(3,SRC).

Occupational exposure may occur through inhalation or dermal contact at sites where 2-bromotoluene is manufactured, used as a solvent or used as a chemical intermediate. (SRC)

Effect of substituents on in vitro metabolism and covalent binding of substituted bromobenzenes was studied. Glutathione reduced covalent binding of enzyme-substrate in concn as low as 0.01 millimolar for all compounds except o-bromobenzotrifluoride which required 0.1 millimolar. Major rat urinary metabolites are phenols, and mercapturic acids, products of the arene oxide metabolic pathway.

SYMPTOMS: This compound causes skin and eye irritation. ACUTE/CHRONIC HAZARDS: This compound causes skin and eye irritation. When heated to decomposition it emits toxic fumes. (NTP, 1992)

EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop. SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment. INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing. INGESTION: DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital. (NTP, 1992)

Benzene, 1-bromo-2-methyl-: ACTIVE

GC METHOD FOR QUALITATIVE & QUANTITATIVE ANAL OF MIXT OF BENZYL BROMIDE (TECHNICAL PROD CONTAINED O- & P-BROMOTOLUENE CONTAMINANTS), XYLYL BROMIDE, CHLOROACETOPHENONE, ALPHA-CHLOROBENZALMALONONITRILE & DIPHENYLAMINOARSINE CHLORIDE IS PRESENTED. THE 1 UG SENSITIVITY OF THE METHOD COULD BE INCREASED BY UTILIZATION OF AN ELECTRON CAPTURE DETECTOR.|Analyte: Chlorobenzene; Matrix: air; Procedure: Gas chromatography, flame ionization detector; Desorption: 1 ml CS2, stand 30 min; Range: 0.4-10 mg/ samp; Precision: 0.025; Est LOD: 0.01 mg/samp; Interferences: none /Hydrocarbons, halogenated, Chlorobenzene/