Hazardous chemicals may exist in solid, liquid or gaseous state. Solids are usually dangerous when they contact water or other liquids. Sodium, for example, reacts with water to ignite, while corrosive powders react with moisture on skin or mucous membranes to burn tissue. Hazardous chemicals in liquid form may release vapors that ignite, or penetrate clothing and skin as corrosives or toxics. Flammable liquids, such as gasoline, can spread quickly if released, and corrosive liquids can burn through many layers of clothing. Gases can ignite explosively if they are flammable, or damage the eyes, throat and lungs if they are corrosive. Gases may also be considered hazardous simply because they are stored under pressure and may explode if their container is heated or damaged.
Labels Labeling is the shortest route to identifying the chemical you are handling. Proper labels on a material container tell you what it is, the ways in which it is hazardous, and in some cases, the amount of hazard it poses. Each chemical requires an identification label containing the chemical name and ingredients, along with contact information of the manufacturer. Each chemical must also have a hazard label showing the primary type of hazard it poses. The two most commonly used labels have been developed by the Department of Transportation (DOT) and the National Fire Protection Association (NFPA). Storage Information hazardous Symbol-old
Labels on primary containers shipped from manufacturers or distributors, the container must be labeled, tagged or marked with the following six items: 1). Product Identifier Product identifier should be used and it should match product identifier used on the SDS. 2). Signal words A word used to indicate the relative level of severity of hazard and alert the reader to a potential hazard on the label. Signal words used in GHS are "Danger" and "Warning." Danger is for the more severe hazard categories. Signal words are assigned to each hazard category 3). Hazard Statements A phrase assigned to a hazard class and category that describes the nature of the hazards of a hazardous product, including when appropriate, the degree of the hazard Hazard statement and code: Hazard statement codes are intended to be used for reference purposes - they are not part of the text and should not be used to replace it.
4). Pictograms Pictogram means a graphical composition that may include a symbol plus other elements, such as a border, background pattern or color that conveys specific information. 5). Precautionary statements Phrase (and/or pictogram) that describes the recommended measures that should be taken to minimize or prevent adverse effects resulting from exposure to a hazardous product. GHS label should include appropriate precautionary information, the choice of which belongs to the labeler or competent authority. 6). Supplier identification Name, address and telephone number of the manufacturer or supplier of the substance or mixture should be provided on the label
Labels Samples
means a chemical substance or a mixture of chemical substances which induce cancer or increase its incidence. Ex. Prolong exposure to Wood Dust can develop Lung Cancer Can Cause Heritable genetic Defects. Mutagen causes changes (mutation) in the genetic materials (DNA) of a cell. This mutation may have an adverse effect on the individual concerned or may be passed down to future generations Can cause sterility, miscarriage or birth defects a substance with the potential to act, through whatever mechanism, to create a situation of airway hypersensitivity. distinguishes between single and repeat exposure for Target Organ Effects. Some existing systems distinguish between single and repeat exposure for these effects and some do not. Ex. Drinking alcohol could temporally affect the nervous system and brain (Acute) however, it could also lead to damage to the liver (Cirrhosis)
FIRE HAZARD 4 - Flash point below 23 o C 3 - Flash point below 38 o C 2 - Flash point below 93 o C 1 - Flash point above 93 o C 0 - Will not burn HEALTH HAZARD 4 - DEADLY 3 - Extreme danger 2 - Hazardous 1 - Slightly hazardous 0 - No effect on health REACTIVITY 4 - May detonate 3 - Shock and heat may detonate 2 - Violent chemical change 1 - Unstable if heated 0 - Stable SPECIFIC HAZARD (WHITE) Oxidizer OXY Acid ACID Alkali ALK Corrosive COR Use no water -W- NFPA Label: Has four function diamond which indicates health, fire, reactivity and specific hazard by numerically rating the degree of hazard on a scale of 0-4. 1 2 NFPA DIAMOND
Sample Labels
Safe or not Safe? Content of the water bottle: Unknown
Exposure Risks Hazardous materials can enter the body in four ways: Absorbed through your skin . This is true of liquids and gases, but solids can also be absorbed if moisture on your skin dissolves them. Inhaled as dust, fumes or vapors . Many hazardous materials have no smell, and you may not notice their presence until it is too late. Ingested (swallowed). In many cases, this happens when a liquid splashes or sprays and some of it gets in your mouth. Injection - Introduced on contaminated objects that puncture your skin . One example of this is broken glass from a container used to carry hazardous material .
ACUTE EXPOSURE Sudden exposure to large concentrations of a hazardous substance for short period of time In most instances damage is not permanent if subject removed from further exposure (Reversible) CHRONIC EXPOSURE Occurs after repeated exposure to low concentrations over long period of time Symptoms may not show for 5-30 years Damage usually permanent (Irreversible) EFFECTS OF EXPOSURE TO HAZARDOUS CHEMICALS
Person's point of view regarding Chronic health effects of chemicals It is not easily seen or feel unlike acute effect. It takes years to develop so people tends to: Ignore. “Nothing is happening” It “Okay” I will only use little amount and “ I have been doing this for the past several years I'm still healthy” It “Okay” I will only do this now.
Consider the following Scenario: This is Mr. TAKS He has been working in the company for 7 years He manage so save build a house in his home country, send his children to school and save around 30, 300 QR in his bank
However, During the last 7 years. He always ignored safety rules and procedures.. Such as not wearing respiratory protection and even reducing his exposure to dust by job rotation when doing.. Cutting (Saw machine) Cutting (Hack Saw) Sanding So he is also storing dust and other hazardous materials inside his body for 7 years.
After 7 years of working.. Mr. TAKS decided to resign due to the reason that he is continuously suffering from coughing and chest pains and breathing problems. He decided to go for check up. And he was diagnosed for severe asthma and even could lead to lung cancer if no treatment is to be done. So he has to go for continuous treatments.
Results of his 7 years unsafe working. Savings: 35,000 QAR Continuous medical treatment: 500 QAR per month Medicines: 500 QAR per month Doctors Fee: 300 QAR per month Possible rejection of future job due to failure in medical test Children could stop going school if you could not provide financial support End Result.. Your body will always claim tax to whatever you have done to it. Results and cost of his unsafe actions of his 7 years working After another 10-15 years. Possible lung cancer and even death
So always take care of your own body. That way you could Enjoy your retirement benefits with your grand children's
Every Chemicals requires specific PPE’S. You have to follow that is specified in the SDS of the chemicals. Examples of PPE available at site