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Clove Oil Safety Guide

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  What is Clove Oil? Clove Oil, sometimes written as Oil of Clove, is an essential oil derived from the clove plant, S. aromaticum. The primary active component of clove oil is the compound eugenol, an aromatic compound of the phenylpropene group. Per the PubChem database, clove oil also contains the aromatic compounds benzaldehyde, methyl salicylate, and eugenol acetate, as well as caryophyllene, ylangene, and 2-heptanone. This guide will primarily focus on the hazards of the eugenol component. Clove Oil has the CAS Number 800-34-8. Eugenol has the CAS Number 97-53-0. When searching for clove oil in the component list of a safety document, such as a Chemical Label or a Safety Data Sheet, look for either of these CAS numbers. Notable Properties of Clove Oil At room temperature, clove oil is a liquid. It can either be clear or will have a pale yellow coloration. Over time with exposure to oxygen or UV, it can discolor to a darker brown color. To limit discoloration, store clove oil in a
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Introduction to DOT Limited Quantitites

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  What is a DOT Limited Quantity? The formal definition of a Limited Quantity from the Pipeline and Hazardous Materials Administration (PHMSA) is as follows: Limited quantity, when specified as such in a section applicable to a particular material, means the maximum amount of a hazardous material for which there is a specific labeling or packaging exception. 49 CFR 171.8 “Limited quantity” In simpler terms, a limited quantity in an amount of hazardous material small enough to be less hazardous and therefore requires less stringent packaging and labeling compared to other hazardous shipments. What Exceptions are made for Limited Quantity Shipments? The full text describing exceptions to the shipping rules for limited quantity materials can be found in  49 CFR Part 173.156 . In addition to the exceptions listed in the linked text, there are other exceptions within Part 173 pertaining to more specific exceptions by hazard class and transportation method. Gross Weight Limi
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Understanding DOT Class 9 Materials: Miscellaneous Hazardous Materials

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  Definition of DOT Class 9: Miscellaneous Hazardous Materials Class 9 covers materials which are hazardous for transportation but do not otherwise fall into the Class 1 to Class 8 classifications. Class 9 materials include anesthetic, noxious, or other similar materials which could inhibit the performance of a flight crew member if released. They also include elevated temperature materials, hazardous substances, hazardous waste, and marine pollutants that meet a definition within 49 CFR 171.8 but not a specific Class definition. Relationship Between Class 9 and OSHA Hazard Classifications Since Class 9 is strongly defined more by the material's properties being hazardous in transportation, there is minimal overlap with OSHA Hazard Classification. OSHA has separate Hazards Not Otherwise Classified apart from Physical Hazards and Health Hazards. While PHMSA Class 9 includes materials which are considered elevated temperature material and marine pollutants,
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Sodium Carbonate Safety Guide

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  What is Sodium Carbonate? Sodium Carbonate, also known as disodium carbonate and soda ash, is an organic sodium salt. It has many uses, ranging from being an ingredient in detergents and cleaners to textile processing to human and veterinary medicine. Sodium carbonate has the CAS Number 497-19-8. Notable Properties of Sodium Carbonate In its natural solid form, sodium carbonate is a colorless crystal and when powered it appears white. What Makes Sodium Carbonate Hazardous? Sodium carbonate is an irritant, with exposure causing irritation to the skin and eyes. There are also reports of repeated sodium carbonate inhalation causing irritation and damage to the respiratory system. Sodium Carbonate Frequently Asked Questions Does sodium carbonate dissolve in water? Yes, sodium carbonate is soluble in water. It will break down into carbonic acid and sodium hydroxide. For more information about sodium hydroxide, see the AHCES Lye Safety Guide . 6 Steps for Safety Step 1: Read the Warnings W
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Understanding DOT Class 8 Materials: Corrosive Materials

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Definition of DOT Class 8: Corrosive Materials Class 8 covers corrosive materials. The formal definitions associated with Class 8 can be found in 49 CFR 173.136 . Class 8 Corrosives covers both materials that are corrosive to human skin and materials that are corrosive to metal. The hazard of being corrosive to human skin is the primary basis the regulation is written on and is referred to the most within the relevant regulations, due to the risk to human health presented. Class 8 Packing Groups Class 8 is divided into three Packing Groups, labeled Packing Group I, Packing Group II, and Packing Group III in descending order of severity. The primary assignment of the Packing Group is based on how rapidly the material can cause irreversible damage to human skin. Lower Packing Group materials, meaning more dangerous materials, will have accordingly stricter packaging requirements and restrictions associated with them. Relationship Between Class 8 and OSHA Hazard Classifications Materials
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Hydrochloric Acid Safety Guide

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  What is Hydrochloric Acid? Hydrochloric Acid, also known as muriatic acid, is the aqueous solution of hydrogen chloride dissolved in water. Hydrochloric acid has many uses, ranging from leather tanning and electroplating metals to heavy-duty cleaning applications. Both hydrochloric acid, a liquid, and hydrogen chloride, a gas, have the CAS Number 7647-01-0. Notable Properties of Hydrochloric Acid For safety and handling purposes, hydrochloric acid and hydrogen chloride are often treated interchangeably. Hydrogen chloride reacts readily with water vapor in air, forming vaporous hydrochloric acid. This reaction can also take place within the respiratory system, with inhaled hydrogen chloride forming hydrochloric acid when in contact with the moist parts of the airway and lungs. Likewise, hydrochloric acid can give off irritating hydrogen chloride vapors. Even with the overlap in hazards, there are still some different risks associated hydrochloric acid and hydrogen chloride. What Makes
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Understanding DOT Class 7 Materials: Radioactive Materials

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  Definition of DOT Class 7: Radioactive Materials Class 7 covers radioactive materials. The formal definitions associated with Class 7 can be found in 49 CFR 173.403 . Class 7 materials are highly specific in regulations associated with them. Only a properly trained professional should be handling and packing Class 7 materials. Types within Class 7 Different types of sub-classifications are used in Class 7. Normal Form is the default type of Class 7 material. There is also a Special Form Class 7 material, which is a non-dispersible solid radioactive material or radioactive material in a sealed capsule, which meets the requirements of the definition . There are Type A and Type B quantities. Type A packages are a form of limited quantity, defined by ranges of radionuclide values. Type B packages have radionuclide values greater than the limits for Type A. These types determine what form of packaging is required for a given shipment of radioactive material. Relationship
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