MOD 1 Flashcards
(41 cards)
What is Dematitas ?
Inflammation of the skin
What is Polymerization
A chemical reaction in which two or more small molecules combine to form larger molecules .In a hazardous polymerization, this reaction occurs at a rate that releases large amounts of energy, causing fires, explosions, or burst containers. Materials that can polymerize usually contain inhibitors that delay the reaction.
Silicosis
Silicosis is caused by exposure to inhalable crystalline silica dust. Crystalline silica is a basic component of soil, sand, granite, and most other types of rock, and is used as an abrasive blasting agent. Silicosis is a progressive, disabling, and often fatal lung disease. Cigarette smoking exacerbates the lung damage caused by silicosis.
What does HCS stand for ?
Hazard Communication Standard
What does GHS stand for ?
Globally Harmonized System
Why is the HCS needed ?
workers have both a need and a right to know about the hazards and identities of the chemicals they are exposed to when performing their tasks and duties.
Where and What does the HCS cover ?
The Whole USA, The Hazard Communication Standard covers both physical (such as explosive, flammable) and health (acute and chronic) hazards. Being a worker or an employer, you have a need and a “right to know” how you can handle chemicals safely.
What are hazardous and toxic materials ?
Hazardous and toxic materials are those chemicals that may be present in a workplace and have a capacity to harm humans. Mixtures, fuels, solvents, paints, and dusts are all considered hazardous substances or materials.
What is Toxicity
The term toxicity is used to describe the ability of a substance to cause a harmful effect. Almost everything is toxic at some dose or concentration.
What does flashpoint mean ?
The factor that determines whether a liquid is flammable is its flashpoint.
The flashpoint is a minimum temperature at which a liquid produces enough vapor within a test vessel in adequate concentration to form a flammable mixture with air near the surface of the liquid.
What are the 4 categorys of Flammable liquids ?
Category 1: Liquids with a flash point less than 73.4 degrees Fahrenheit and an initial boiling point less than or equal to 95 degrees Fahrenheit
Category 2: Liquids with a flash point less than 73.4 degrees Fahrenheit and an initial boiling point greater than 95 degrees Fahrenheit
Category 3: Liquids with a flash point greater than or equal to 73.4 degrees Fahrenheit and less than or equal to 140 degrees Fahrenheit
Category 4: Liquids with a flash point greater than 140 degrees Fahrenheit and less than or equal to 199.4 degrees Fahrenheit
What is a hazard class ?
Hazard class is the nature of the physical or health hazards, for example a flammable solid, carcinogen, or oral acute toxicity.
What is a container ?
Container means any bag, barrel, bottle, box, can, cylinder, drum, reaction vessel, storage tank, or the like that contains a hazardous chemical
What is exposure
Exposure (or exposed) means that an employee is subjected, as a condition of employment, to a chemical that is a physical or health hazard, including potential (accidental or possible) exposure. “Subjected” in terms of health hazards includes any route of entry such as inhalation, ingestion, skin contact, absorption, or injection.
What is a hazard category ?
Hazard category means the division of criteria within each hazard class, for example the four hazard categories of flammable liquids. These categories compare hazard severity within a hazard class and should not be taken as a comparison of hazard categories more generally.
What does immediate use mean ?
Immediate use means that the hazardous chemical will be under the control of and used only by the person who transfers it from a labeled container and only within the work shift in which it is transferred.
Any hazardous material decanted - pumped from a primary to a secondary container - should have the labeling information transferred to the secondary container also.
What does decant mean ?
gradually pour (liquid, typically wine or a solution) from one container into another, especially without disturbing the sediment.
What is Organic Peroxide
Organic peroxide is any carbon-containing compound with two oxygen atoms joined together. Organic peroxides can be severe fire and explosion hazards.
Oxidizer
An oxidizer is a chemical other than a blasting or explosive agent that initiates or promotes combustion in other materials, thereby causing fire either by itself or through the release of oxygen or other gases .
Pyrophoric
Pyrophoric means a chemical is liable to ignite spontaneously within five minutes of being exposed to air.
Flammable liquides are those that have a flash point below _______ ?
100°F ( 37.8°C ) .
combustibles liquids are those that have a flashpoint at or above _________ and not more than __________ ?
140°F ( 60.5°C ) - 199.4°F ( 93°C )
What does Self-Reactive mean ?
Self-reactive means a chemical that in its pure state, or as produced or transported, is liable to vigorously polymerize, decompose, or condense under conditions of shocks, pressure, or temperature, with or without the presence of oxygen.
What does Water-Reactive mean ?
Water-reactive means a chemical that reacts with water to release a gas that is either flammable or presents a health hazard.
