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Class 3 flammableliquid storage requirements

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Is gasoline aClass 3 flammableliquid

Always clean up any spills of flammable liquids promptly. Be aware that flammable vapors are usually heavier than air (vapor density > 1). For those chemicals with vapor densities heavier than air (applies to most chemicals), it is possible for the vapors to travel along floors and, if an ignition source is present, result in a flashback fire.

The widespread use of HF and fluoride containing compounds has resulted in significant toxicity. In 1988, an oil refinery in Texas released a cloud of hydrogen fluoride gas that resulted in 36 people requiring hospital treatment.38 The petroleum industry has since been plagued by similar HF incidents.98 NaF was responsible for the poisoning of 263 people and 47 fatalities when it was mistaken for powdered milk and unintentionally combined with scrambled eggs.55 Following ingestion, fluoride salts can be converted to HF in vivo, resulting in significant fluoride toxicity.

The OSHA Laboratory Standard defines a flammable liquid as any liquid having a flashpoint below 100 degrees F (37.8 degrees C), except any mixture having components with flashpoints of 100 degrees F (37.8 degrees C) or higher, the total of which make up 99% or more of the total volume of the mixture.

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A flammable liquid storage cabinet provides added protection to keep employees and property safer from fires.

HF is synthesized as the product of gaseous sulfuric acid and calcium fluoride, which is subsequently cooled to a liquid.57 Aqueous HF is a weak acid, with a pKa of approximately 3.2; as such, it is approximately 1000 times less dissociated than an equimolar strong acid such as hydrochloric acid. HF is generally available in concentrations from 3% to 40%, for use in both industry and the home. Anhydrous HF is highly concentrated (>70%) and used almost exclusively for industrial purposes. HF has unique properties that can cause life-threatening complications following seemingly trivial exposure.

Class 3Hazardous materials divisions

When using flammable liquids, keep containers away from open flames; it is best to use heating sources such as steam baths, water baths, oil baths, and heating mantels. Never use a heat gun to heat a flammable liquid. Any areas using flammables should have a fire extinguisher present. If a fire extinguisher is not present, then contact EHS at 607-255-8200 for more assistance.

Flashpoint is defined as the minimum temperature at which a liquid gives off enough vapor to ignite in the presence of an ignition source. The risk of a fire requires that the temperature be above the flashpoint and the airborne concentration be in the flammable range above the Lower Explosive Limit (LEL) and below the Upper Explosive Limit (UEL).

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When pouring flammable liquids, it is possible to generate enough static electricity to cause the flammable liquid to ignite. If possible, make sure both containers are electrically interconnected to each other by bonding the containers, and connecting to a ground.

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Flammable and combustible liquids are one of the most common types of chemicals used at Cornell and are an important component in a number of laboratory processes. However, in addition to the flammable hazard, some flammable liquids also may possess other hazards such as being toxic and/or corrosive.

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Hydrofluoric acid (HF) has been known for centuries for its ability to dissolve silica. The Nuremberg artist Schwanhard is given credit for the first attempt to use HF vapors to etch glass in 1670.47 Today, HF has multiple applications and is widely used throughout industry. In addition to glass etching, HF is used in brick cleaning, etching microchips in the semiconductor industry, electroplating, leather tanning, rust removal, and the cleaning of porcelain.47 From 2009 to 2011, the American Association of Poison Control Centers reported more than 1000 exposures to HF and at least 3 deaths (Chap. 136). The hands are the commonest part of the body injured. Exposures to HF often occur as an unintentional occupational hazard. The actual number of work-related poisonings from HF appears difficult to quantitate because of limitations in International Classification of Diseases (ICD) medical coding and the lack of notification of regional poison centers by worksites.10

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The OSHA Laboratory Standard defines a combustible liquid as any liquid having a flashpoint at or above 100 degrees F (37.8 degrees C), but below 200 degrees F (93.3 degrees C), except any mixture having components with flashpoints of 200 degrees F (93.3 degrees C), or higher, the total volume of which make up 99% or more of the total volume of the mixture. OSHA further breaks down flammables into Class I liquids, and combustibles into Class II and Class III liquids.

Always keep flammable liquids stored away from oxidizers and away from heat or ignition sources such as radiators, electric power panels, etc.

HF is also the commonest cause of fluoride poisoning, although other forms of fluoride, including sodium fluoride (NaF), ammonium bifluoride (NH4HF2), and sodium or zinc fluorosilicate, may also produce significant toxicity. Historically, NaF has been used as an insecticide, rodenticide, an antihelminthic for swine, and a delousing powder for poultry and cattle. NH4HF2 is mainly used in industrial inorganic chemistry, especially in the processing of alloys and in glass etching. Other fluoride salts are widely used in the steel industry, drinking water, toothpaste additives, electroplating, lumber treatment, and the glass and enamel industries.

Sodium fluoride is commonly synthesized by the reaction of sodium hydroxide (NaOH) with HF, with subsequent purification by recrystallization. NaF is highly soluble in water and readily dissociates....