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Understanding DOT Class 4 Materials: Flammable Solids, Spontaneously Combustible, and Dangerous When Wet Materials

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  Definition of DOT Class 4: Flammable Solids, Spontaneously Combustible, and Dangerous When Wet Materials Class 4 covers flammable solids, as well as spontaneously combustible and dangerous when wet materials. The formal definition can be found at 49 CFR 173.124 . Class 4 Divisions Class 4 materials are divided into three divisions. Division 4.1 Division 4.1 materials are referred to under the name of Flammable Solids, and come in four groups. Desensitized Explosives Self-Reactive Materials, which are thermally unstable and capable of exothermic decomposition without oxygen Readily Combustible Solids Polymerizing Materials, which are liable to undergo an exothermic reaction under conditions normally found in transportation Division 4.2 Division 4.2 materials are referred to under the name of Spontaneously Combustible Material. This includes both pyrophoric material and self-heating material. Division 4.3 Division 4.3 materials are referred to under the name of Dangerous When Wet Mater
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Benzaldehyde Safety Guide

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  What is Benzaldehyde? Benzaldehyde, also known as benzoic aldehyde, is an organic compound with a distinct almond odor. It can be found naturally in plants of the genus Prunus, including the bitter almond. Both natural and synthetic benzaldehyde is used as an almond fragrance and flavoring. Benzaldehyde has the CAS Number 100-52-7. The CAS Number is used to identify benzaldehyde on documents including safety data sheets and chemical labels. When looking for benzaldehyde in a product, check for the CAS number on the associated safety documents. Notable Properties of Benzaldehyde Benzaldehyde is liquid at room temperature and has an almond scent. Benzaldehyde is clear when fresh, though readily yellows with age, and should be stored in an air-tight, opaque contained to limit yellowing. What Makes Benzaldehyde Hazardous? Benzaldehyde is an irritant; it can cause skin, eye, and respiratory irritation. Benzaldehyde can cause allergic reactions in those allergic to some compounds found in
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Understanding DOT Class 3 Hazardous Materials: Flammable Liquids

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  Definition of DOT Class 3: Flammable Liquids Class 3 covers flammable liquids. This also includes material classified as combustible liquids. These are liquids that have a flash point of not more than 60 °C (140 °F), as well as solids heated to liquid phase with a flash point at or above 37.8 °C (100 °F). Note that if a flammable material would fit the definition of a gas as defined in the Class 2 definition, even if in a liquid state due to pressure and/or refrigeration, it is treated as a Class 2 material. The formal definitions can be found at 49 CFR 173.120 . Difference between Flammable Liquids and Combustible Liquids Combustible liquids generally have similar transportation concerns as flammable liquids and are also covered under Class 3, though are not treated as a separate division. Combustible liquids may be a liquid which does not have any other hazard classes and has a flash point above 60 °C (140 °F) and below 93 °C (200 °F). A flammable liquid which does not have any oth
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Menthol Safety Guide

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  What is Menthol? Menthol, also known as menthyl alcohol and 2-isopropyl-5-methylcyclohexanol, is a naturally occurring alcohol produced by plants including the peppermint Mentha x piperita . Menthol is a major component in peppermint essential oil and is used for a wide range of applications across multiple industries, from peppermint fragrances and flavorings to topical pain relievers and cough suppressants. Menthol has the CAS Number 1490-04-6. The CAS Number is used to identify menthol as an ingredient on safety data sheets (SDS) and other safety documentation. When looking for menthol as an ingredient in products like peppermint flavoring and fragrances, look for the CAS Number in the composition table. Notable Properties of Menthol Menthol is a solid at room temperature, forming white crystals that smell distinctly of peppermint. Menthol is highly soluble in ethanol and volatile oils, which are often used as carriers when menthol is more useful in liquid form. What M
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Understanding DOT Class 2 Hazardous Materials: Gases Under Pressure

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   Definition of DOT Class 2: Gases Under Pressure Class 2 covers gaseous materials, including flammable, poisonous, and compressed gases. The formal definitions can be found at 49 CFR 173.115 . Class 2 Divisions Class 2 Materials are divided into three divisions. Division 2.1 Division 2.1 materials are flammable gases. Division 2.2 Division 2.2 materials are gases that are neither flammable nor poisonous, and are being transported under pressure. This includes compressed gases, liquified gases, pressurized cryogenic gases, compressed gases in solution, asphyxiant gases, and oxidizing gases. For most intents and purposes, Division 2.2 is a catch-all for gases that pose transportation hazards but do not fall under any other specific category. Division 2.3 Division 2.3 materials are gases which are poisonous by inhalation. Classification Testing for Potential Class 2 Materials A Class 2 material must be first qualified as a gas before any further testing can occ
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Cinnamaldehyde Safety Guide

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   What is Cinnamaldehyde? Cinnamaldehyde, also known as cinnamal or cinnamon essential oil, is a naturally occurring organic compound produced by trees of the Cinnamomum genus. It is the primary compound that gives the spice cinnamon its distinctive flavor. While it is possible to create synthetic cinnamaldehyde, most is extracted by steam distillation from natural sources. Cinnamaldehyde has the CAS Number 14371-10-9. The CAS Number is used to identify cinnamaldehyde on documents including safety data sheets and chemical labels. When looking for cinnamaldehyde in a product, check for the CAS number on the associated safety documents. Notable Properties of Cinnamaldehyde Cinnamaldehyde is a liquid at room temperature, with a pale yellow to yellow-green color. It smells distinctly and strongly of cinnamon. Natural cinnamaldehyde, or cinnamon essential oil, often contains other compounds which can change some chances to the coloration or scent compared to synthetic, pure cin
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Understanding DOT Class 1 Hazardous Materials: Explosives

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Definition of DOT Class 1: Explosives Class 1 covers explosive materials, meaning materials that can react to cause a rapid release of heat and gases. The formal definition can be found at 49 CFR 173.50 . Class 1 Divisions Class 1 materials are divided into six divisions. Division 1.1 Division 1.1 materials are a mass explosion risk, meaning that the entire amount of material is at risk of detonating in one event. Division 1.2 Division 1.2 materials are a projection hazard which do not risk a mass explosion. Division 1.3 Division 1.3 materials have both a fire hazard and either a minor blast hazard or minor projection hazard. Division 1.3 materials do not risk a mass explosion. Division 1.4 Division 1.4 materials have a minor explosion hazard, which is generally confined to the confines of the package. Division 1.5 Division 1.5 materials have a mass explosion risk but are highly insensitive to outside stimuli initiating an explosion. Division 1.6 Division 1.6 materials have o
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