Basis for revised IDLH

How many ppm is benzene harmful?

Brief exposure (5–10 minutes) to very high levels of benzene in air (10,000–20,000 ppm) can result in death. Lower levels (700–3,000 ppm) can cause drowsiness, dizziness, rapid heart rate, headaches, tremors, confusion, and unconsciousness.

How much benzene is in a cigarette ppm?

Benzene emissions from cigarette smoking range from 430 to 590 μg per cigarette (28). An increase in benzene concentration of at least 30–70% is expected (3,18,20,29,30) when ETS is present indoors, with increases in some cases of 300% (31) to levels of 16 μg/m3 (18).

How much benzene is too much?

OSHA limits exposure to benzene in the air in most workplaces to 1 ppm (part per million) during an average workday and a maximum of 5 ppm over any 15-minute period. When working at potentially higher exposure levels, OSHA requires employers to provide personal protective equipment such as respirators.

What is a safe level of benzene in water?

EPA has set 5 ppb as the maximum permissible level of benzene in drinking water . EPA has set a goal of 0 ppb for benzene in drinking water and in water such as rivers and lakes because benzene can cause leukemia . EPA estimates that 10 ppb benzene in drinking water that is consumed regularly or exposure to 0 .

How is benzene harmful?

Benzene causes harmful effects on the bone marrow and can cause a decrease in red blood cells, leading to anemia. It can also cause excessive bleeding and can affect the immune system, increasing the chance for infection.

How poisonous is benzene?

Benzene is very poisonous. Poisoning can cause rapid death. However, deaths have occurred as long as 3 days after the poisoning.

What kind of hazard is benzene?

Benzene is extremely hazardous in case of inhalation, ingestion or absorption through the skin, leading to health effects such as these and more. Chronic exposure is known to cause cancer and other severe health conditions, including adverse reproductive problems and birth defects.

How is benzene removed from the body?

Instead, try to cut off the clothing and remove it from your body as quickly as possible. Wash yourself and your skin with warm soap and water. Flush out any benzene that might be in the mouth or eyes for at least fifteen minutes.

Why is benzene banned?

Benzene has been banned as an ingredient in products intended for use in the home, including toys. Benzene has a sweet, aromatic, gasoline-like odor. … The odor threshold generally provides adequate warning for acutely hazardous exposure concentrations but is inadequate for more chronic exposures.

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At what temperature does benzene evaporate?

It has a relatively low boiling point (80.1 oC) and a high vapour pressure (9.95 kPa at 20 oC), causing it to evaporate rapidly at room temperature. It is slightly soluble in water (1.8 g/litre at 25 oC) and miscible with most organic solvents.

How do you control benzene?

Methods for Containment and Clean-up: Stop or reduce leak if safe to do so. Small spills or leaks: contain and soak up spill with absorbent that does not react with spilled product. Place used absorbent into suitable, covered, labelled containers for disposal. Flush spill area.

Is benzene harmful in drinking water?

Drinking water with levels of benzene well above the drinking water standard for a long time increases the risk of affecting the blood. Benzene can affect the bone marrow that makes blood cells. It can cause a decrease in red blood cells. This can lead to anemia.

How much benzene is in a gallon of gas?

The national benzene content of gasoline today is about 1.0 vol%.

Can you filter out benzene from water?

Treatment options are available to remove benzene from well water. The most commonly used is granular activated carbon filtration. Options include central treatment (at the well or entry to home) or a point-of-use device (kitchen sink filter).

Is benzene toxic to inhale?

Acute (short-term) inhalation exposure of humans to benzene may cause drowsiness, dizziness, headaches, as well as eye, skin, and respiratory tract irritation, and, at high levels, unconsciousness.

Is benzene a VOC?

Common examples of VOCs that may be present in our daily lives are: benzene, ethylene glycol, formaldehyde, methylene chloride, tetrachloroethylene, toluene, xylene, and 1,3-butadiene.

What is the action level for benzene?

Definitions. Action level means an airborne concentration of benzene of 0.5 ppm calculated as an 8-hour time-weighted average. Assistant Secretary means the Assistant Secretary of Labor for Occupational Safety and Health, U.S. Department of Labor, or designee.

How do you test for benzene?

Certain metabolites of benzene, such as phenol, muconic acid, and S-phenylmercapturic acid can be measured in the urine. The amount of phenol in urine has been used to check for benzene exposure in workers. The test is useful only when you are exposed to benzene in air at levels of 10 ppm or greater.

How do you get exposed to benzene?

How are people exposed to benzene? People are exposed to benzene primarily by breathing air that contains the chemical. Workers in industries that produce or use benzene may be exposed to the highest levels of the chemical, although federal and state regulations have reduced these exposures in recent decades.

What is the range of petrol in benzene?

US Environmental Protection Agency (EPA) limits the Benzene percentage in gasoline to an average of 0.62% by volume (maximum 1.3%). The Fuels Quality Directive (EU, 2003a) limits the Benzene content in petrol to < 1%.

What household products contain benzene?

• Paint, lacquer, and varnish removers.
• Industrial solvents.
• Gasoline and other fuels.
• Glues.
• Paints.
• Furniture wax.
• Detergents.
• Thinners.

Where is benzene found in the home?

In homes, benzene may be found in glues, adhesives, cleaning products, paint strippers, tobacco smoke and gasoline. Most benzene in the environment comes from our use of petroleum products.

What foods contain benzene?

The presence of benzene also was reported in butter, eggs, meat, and certain fruits; levels of these findings ranged from 0.5 ng/g in butter to 500-1900 ng/g in eggs.

What should you do if benzene is spilled or leaked?

Steps to be taken if the material is released or spilled. As much benzene as possible should be absorbed with suitable materials, such as dry sand or earth. That remaining must be flushed with large amounts of water. Do not flush benzene into a confined space, such as a sewer, because of explosion danger.

Can you be allergic to benzene?

* Breathing Isopropenyl Benzene can irritate the nose and throat causing coughing and wheezing. * Exposure can cause headache, dizziness, lightheadedness and breathlessness. * Isopropenyl Benzene may cause a skin allergy. If allergy develops, very low future exposure can cause itching and a skin rash.

Is benzene banned in Europe?

In the EU, benzene has been classified as a category I carcinogen as early as 1967[3]. Its use is restricted in the Marketing and Use Directive (76/769/EEC)[4]. Benzene is not allowed to be placed on the market, or used as a substance, or as a constituent of mixtures in concentration greater than 0.1% by weight.

What is benzene used for in pharmaceuticals?

It’s used primarily as a solvent in the pharmaceutical industry and can be found in certain drugs. Historically, benzene was also used as an industrial solvent and gasoline additive, though these uses have gone down dramatically in the past several decades.

What temperature will Benzene be both liquid and gas?

Density at 20°CDensity at 100°Cliquid: water0.998 g/mL0.958 g/mLgas: oxygen1.33 g/L1.05 g/L

What happens to benzene when heated?

Benzene when heated in air burns with and produces CO2 and H2O .

What is the viscosity of benzene?

Temp. [°C]Dyn. Viscosity [mPa.s]Density [g/cm³]300.5620.8680500.4360.8470750.3321000.263