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Chemical Safety | Chemical Hazards and Precautions | Types of Chemical | Interview Q/A | Download PPT

Table of Contents

Chemical safety refers to the practices and protocols put in place to prevent accidents, injuries, or exposure to hazardous substances in various settings like laboratories, industries, and households.

1. Toxicity:

• Description: Chemicals that are toxic can cause harm or adverse effects when inhaled, ingested, or come into contact with the skin or eyes.
• Arsenic: Found in pesticides, can cause poisoning and long-term health issues.
• Lead: Found in old paint, can lead to neurological damage.

2. Flammability:

• Description: Substances that can easily catch fire or ignite, leading to fires or explosions.
• Gasoline: Highly flammable, used as a fuel but can cause fires if mishandled.
• Acetone: Commonly used as a solvent, highly flammable in its liquid state.

3. Corrosivity:

• Description: Chemicals that can cause damage or destruction to materials or living tissue upon contact.
• Sulfuric Acid: Used in manufacturing, can cause severe burns on contact with skin.
• Hydrochloric Acid: Found in cleaning products, can corrode metals and cause skin irritation.

4. Reactivity:

• Description: Chemicals that can react violently with other substances, leading to explosions or the release of toxic gases.
• Chlorine Gas: Used in various industries, can be toxic and reactive, causing respiratory problems.
• Potassium Permanganate and Glycerin Reaction: Can cause spontaneous ignition.

5. Biohazards:

• Description: Chemicals that can pose a threat to living organisms or the environment.
• Pesticides: Used in agriculture, can harm non-target organisms and contaminate the ecosystem.
• Chemicals used in Pharmaceutical Research: May have adverse effects on laboratory animals or the environment if improperly handled or disposed of.

6. Asphyxiant Hazards:

• Description: Chemicals that displace oxygen in the air, leading to suffocation.
• Carbon Dioxide (CO2): In high concentrations, can cause asphyxiation by reducing available oxygen.

Precautions to Ensure Safety:

• Conducting risk assessments before handling chemicals.
• Using appropriate personal protective equipment (PPE) like gloves, goggles, and lab coats.
• Proper ventilation in work areas.
• Labeling chemical containers clearly.
• Training employees on safe handling and emergency procedures.
• Regular maintenance and inspection of equipment.

1. Organic Chemicals:

• Example: Ethanol (C2H5OH) – Found in alcoholic beverages, used as a solvent and in fuel.
• Description: Derived from living organisms, these compounds contain carbon and typically have covalent bonds.

2. Inorganic Chemicals:

• Example: Sodium Chloride (NaCl) – Common table salt used in cooking and various industrial processes.
• Description: These compounds lack carbon and are often minerals or salts.

3. Toxic Chemicals:

• Example: Mercury (Hg) – Found in some thermometers and industrial processes, harmful if ingested or inhaled.
• Description: Substances that can cause harm to living organisms upon exposure, even in small amounts.

4. Flammable Chemicals:

• Example: Propane (C3H8) – Used as a fuel for heating and cooking.
• Description: Substances that can ignite and burn easily in the presence of a flame or spark.

5. Corrosive Chemicals:

• Example: Sulfuric Acid (H2SO4) – Used in batteries, manufacturing, and cleaning agents.
• Description: Substances that can cause damage or destruction to materials or living tissue upon contact.

6. Volatile Organic Compounds (VOCs):

• Example: Benzene (C6H6) – Found in gasoline, used in the production of plastics and synthetic fibers.
• Description: Organic compounds that easily evaporate into the air and can contribute to air pollution.

7. Hazardous Air Pollutants (HAPs):

• Example: Formaldehyde (CH2O) – Found in building materials, used in adhesives and coatings.
• Description: Chemicals known to cause or suspected of causing adverse health effects and environmental damage when released into the air.

What is the First Step in a COSHH Assessment?

What is the Number 1 Golden Rule in COSHH?

Who Uses COSHH?

What is SDS and COSHH?

What Are the Main Principles of COSHH?

Interview Questions and Answers:

• Answer: Chemical exposure can lead to various hazards such as toxicity, flammability, corrosiveness, and environmental harm.
• Answer: By implementing strict protocols, including risk assessments, proper labeling, adequate ventilation, and mandatory use of personal protective equipment.
• Answer: Immediately contain the spill, evacuate the area if necessary, and follow established procedures for cleanup while wearing appropriate protective gear.
• Answer: MSDS provides crucial information about chemical properties, hazards, handling, storage, and emergency procedures, ensuring safe usage and handling of chemicals.
• Answer: Flammable chemicals can easily catch fire or ignite, while corrosive chemicals can cause damage upon contact, often eating away at surfaces or causing burns on skin.

Remember, in interviews, it’s essential to provide specific examples from your experience and highlight your commitment to safety protocols and regulations. Safety in handling chemicals is paramount, so emphasizing your adherence to best practices is key.

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Laboratory and Chemical Safety

Aug 22, 2014

631 likes | 1.03k Views

Part Two. Laboratory and Chemical Safety . First Aid – Accidents. WATER – the first line for chemical contact or burns. Do not neutralize the chemical. The reaction will release heat and cause further damage to the skin

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Presentation Transcript

Part Two Laboratory and Chemical Safety

First Aid – Accidents • WATER – the first line for chemical contact or burns. Do not neutralize the chemical. The reaction will release heat and cause further damage to the skin • Cuts and other injuries. First aid can be applied by the instructor or the student can be referred to the campus health center. • If necessary, you will be taken to the school nurse, the doctor, or the emergency room. Please keep your insurance information with you at lab.

Chemical Safety • Labeling – required to communicate chemical hazard to the person using it. • SDS – provides information about the chemical

What is on the SDS • 0- Date of preparation • 1- Identification (Formula and molecular weight) • 2- Hazard identification • 3- Composition / information on ingredients • 4- First aid measures • 5- Fire-fighting measures • 6- Accidental release measures • 7- Handling and Storage • 8-Exposure control / personal protection

9- Physical and Chemical Properties • 10- Stability and Reactivity • 11- Toxocological information • 12- Ecological information • 13- Disposal considerations • 14- Transport information • 15- Regulatory information • 16- Other information

Where can you find an SDS • SDSs must be available in the lab in some form in case a student is injured. If the injury involves a chemical, we must have the SDS for the rescue squad.

SDSs in the lab Yellow folder in wire cage – one page On a shelf in one of the two lab rooms - complete

Other locations -In the CSO’s office MCK 307, Dr Crockett -On line (S:\Academic\CHEM\Chemical Inventory)

GHS statements – 1 highest hazard, 5 lowest listed

GHS pictograms (nine) • Acute toxicity (fatal or severe) • Skin corrosion / burns • Eye damage • Corrosive to metals

GHS • Flammables • Pyrophorics • Self heating • Emits flammable gas • Self reactives • Organic peroxides

GHS • Explosives • Self-reactives • Organic peroxides • Aquatic toxicity

GHS • Irritant – skin and eye • Skin sensitizer • Acute toxicity (harmful) • Narcotic effects • Respiratory tract irritant • Hazardous to ozone layer

GHS • Gases under pressure • Oxidizers

GHS • Carcinogen • Mutagenicity • Reproductive toxicity • Respiratory Sensitizer • Target organ toxicity • Aspiration toxicity

Blue – Health Hazard Red – Flammability Yellow – Reactivity White – Special symbol Chemical Labeling - NFPA

NFPA Colors • Blue – 4 – short exposure can cause death – ie. HCN. • Blue – 2 – chronic exposure could cause possible injury – ie. ammonia gas. • Red – 4 – readily vaporize and burn – propane gas. • Red – 2 – must be heated before combustion can occur – fuel oil.

NFPA • Yellow 4 – capable of detonation at normal temperatures – TNT • Yellow 2 – violent chemical changes at elevated T / P or react violently with water – Ca metal • White – • ₩ – water reactive – Mg metal. • OX – oxidizer – ammonium nitrate • ACID - acid • ALK - base • COR – corrosive • - radioactive

Dept. of Transportation • Explosives – five subcategories • Gases

DOT • Flammable liquids • Flammable solids

DOT • Oxidizers • Poisons

DOT • Radioactive • Corrosives Other Hazards

Our labeling – Blue • Blue – Health hazard, • toxic • NFPA 2 • oral LD50 < 1 g / kg • DOT class 6 (Poisons) • TSCA listed • GHS Acute toxic – oral, dermal, or inhalation • GHS Warning – narcotic effects • GHS Aquatic toxicity

Reds • Dark Red – Flammable. • NFPA 2 • Flash point between 100o and 40 oC • DOT 3 or 4 (Flammable liquids or Flammable solids) • GHS flammable category 4 or oxidizer • Light red • NFPA 3 • Flash point between 40o and 10 oC • DOT 3 or 4 (Flammable liquids or Flammable solids) • GHS flammable category 2 or 3 or oxidizer • Combination of the two • NFPA 4 • Flash point below 10 oC • DOT 3 or 4 (Flammable liquids or Flammable solids) • GHS flammable category 1 or oxidizer

Yellow – Corrosive or an oxidizer. NFPA 2 DOT 5 or 8. GHS corrosive, warning, or oxidizer Green – carcinogenic, teratogenic, or mutagenic. IARC 2 or listed on MSDS. GHS Health hazard Black – an explosive or one that can form an explosive species. DOT 1 (explosives) Listed as a peroxide former GHS – explosives White – “no hazard for now” GHS – no symbols

Color dots Blue – toxic, red - flammable Blue – toxic, red on red – extremely flammable

Color dots Blue – toxic, yellow – corrosive Blue – toxic, large green - carcinogenic

Example • 26 – 697 – BY Shelf 26 - inorganic oxidizers MSDS number 697 B – blue – toxic Y – yellow corrosive Compound is 30% hydrogen peroxide

Example • 10 – 642 – BR(3)YGX Shelf 10 – nitro organics MSDS number 642 B – toxic, R(3) – very flammable, Y – corrosive, X – explosive, G – carcinogenic 2-nitropropane (no longer on inventory)

Chemical incompatibility • Alphabetical storage is not used completely • Sodium cyanide with sulfuric acid?? • Acids with bases? • Storage – functional groups. Organics from inorganics. Acids from alcohols. • We combine the two methods. • Separate the chemicals by functional group. • Alphabetize within the group.

Waste from the labs • Labeled bottles will be in the hoods. • Be sure to place chemicals in the proper containers. Read the label! • Do not overfill a waste bottle (2/3 to 3/4). • If full, ask the stockroom manager for a new bottle. Do not use a beaker as a waste “bottle” in the hood.

Labeling for Waste Bottles • Laboratory_______________________________ • Experiment ______________________________ • Waste Contents __________________________ • __________________________ • __________________________ • __________________________ • __________________________ • __________________________

Fire safety • Where are the fire exits when an alarm sounds? Look next to the lab or classroom door. Always check the route in a new building / classroom. • What is the procedure for exiting the building? Read the directions the first time you are in the room. • What is the procedure for after you exit the building? Go outside away from the building and get together with your class. Do not return to the dorm or classroom until the professor tells you to do so. You will be instructed by the building supervisor, police, or fire personnel. • Never assume that it is a drill. Always leave the building

Reporting incidents • How do we report an accident? • Use the reporting form available. Where are the forms – in the lab, in the stockroom, or in my office. • Reportable accidents - • Hazardous chemical spills • Bodily injury • Falls • Simple first-aid • Other as determined by CSO

Accident report form • Name______________________________ Date_____________ • Where exposure occurred: • _________________________________________________________________________________________________________________________________________ • Description of exposure/incident • _______________________________________________________________________________________________________________________________________________________________________________________________________________ • Type/name of chemical involved • _____________________________________________________________________ • *please send copy of the MSDS sheet for product with this form. • Lab Superviser’s signature____________________________

First Aid – Accidents • WATER – the first line for chemical contact or burns. Do not neutralize the chemical. The reaction will release heat and cause further damage to the skin • Cuts and other injuries. Minor first aid can be applied by the instructor or the student can be referred to the campus health center. • If necessary, you will be taken to the school nurse, the doctor, or the emergency room. Please keep your insurance information with you at lab.

Broken glass - do not place into the trash cans. If glass is found in the trash, and unless we know differently, we will hold all students in the previous lab responsible. Trash – trash can – not in the sinks or in the broken glass box Chemical spills and waste – labeled bottles will be placed in the hood. Be careful to place the waste in the correct bottle if more than one bottle is present. Never fill the waste bottle over 2/3 to 3/4 full. Housekeeping duties – during lab

Housekeeping after lab • Clean all glassware that you used • Wipe down the benchtop (wet paper towel) • Return your tray to the cabinet (organic lab) • Return used glassware to the lab supply (general chem) • Refill burets with deionized water • Check the sinks for paper, glass, or plastic • Put the chairs in the center opening of the table. • Leave the area as clean or cleaner as you found it.

Chemical Hygiene Plan • What is the CHP? This is a document that tells us how to handle hazardous chemicals on the BC campus. • Covers. Transportation, handling, labeling etc on the BC campus. • Any questions should come to Dr Crockett • This will be available on line by later this term.

References • Safety in Academic Chemistry Laboratories, ACS • Handbook of Chemical Health and Safety, ACS • Prudent Practices in the Laboratory, NRC • Hazardous Chemicals and the Right to Know, Harris/Harvey • Improving Safety in the Chemical Laboratory, Young • Safe Storage of Laboratory Chemicals, Pipitone • Environmental Compliance Assistance Guide for Colleges and Universities, APPA/CSHEMA • Waste Disposal in Academic Institutions, Kaufman • CFR • Laboratory Safety for Chemistry Students, Robert Hill and David Finster

Quiz! • You will be given a quiz covering the basic safety rules and regulations that we have covered here. When finished, you will sign and turn in the quiz. This marks your attendance in the second half of this seminar. • If both the quiz and the dress code are not turned in, you will NOT receive credit for the seminar and you will no longer be allowed to work in our labs.

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NCNR Chemical Laboratory Safety Training For Instrument Scientists Introduction At NIST, providing a safe environment for employees and visitors is our number one priority.

1.66k views • 52 slides

NCNR Chemical Laboratory Safety Training. For Instrument Scientists. Introduction. At NIST, providing a safe environment for employees and visitors is our number one priority.

972 views • 52 slides

LABORATORY SAFETY

PRE-TEST. Electrical safety should not be ignored in the laboratory. T or FInspections of laboratories are not necessary. T or FIt is acceptable to eat and drink in a laboratory. T or FWho is responsible of supplying PPE?What does MSDS stand for?. Safe laboratory procedures and training are n

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Laboratory Safety

Departmental Safety Information. Building Evacuation PlansIn case of fireClose all gas jets Students in the laboratory should move immediately to assigned exitMake sure all doors are closedLeave building as quickly as possible. Departmental Safety Information. Building Evacuation Plans Evacua

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Chemical Laboratory Safety

Chemical Laboratory Safety. Additional Information. Where to start. Before looking at this presentation, ensure that you have watched the one on General Laboratory Safety. What are the additional hazards from chemical materials?. Toxic substances Solvents Corrosives Flammables Irritants

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Laboratory Safety. Safety in the laboratory involves recognizing all potential hazards and an awareness of the necessary precautions connected with these hazards. Each person in a laboratory is responsible for the safety of EVERYONE working in the laboratory.

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Laboratory Safety. What’s Wrong with this Picture?. List all safety issues with this picture. In other words, what are the students doing wrong in this picture?. What does Lab Safety Mean?. Lab Safety Precautions: Think before you act Know the location of safety equipment in room

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Laboratory Safety. By C. Kohn Agricultural Sciences Waterford, WI. Why do we have to do this?. Lab safety is incredibly boring, has the excitability level of rock farming, and seems like a total waste of time.

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Laboratory Safety. Version 8.0, August 2012. Objectives. Explain the key elements of laboratory safety related to: Fire safety Chemical safety Blood-borne pathogens Dangerous goods shipment Describe the basic safety practice responsibilities for an employer and an employee

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Learning Safety in the Chemical Laboratory.

Learning Safety in the Chemical Laboratory. . Nathan Waddle EDTC 3332.01 March 9, 2014 Instructional Technology Practicum. Design Plan Layout. Item 1. Needs Assessment. Assessment of Learning Outcomes. Learner Characteristics. Instructional Goal. Performance Objectives. Item 2.

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Laboratory safety

Laboratory safety. Page 6 - 13 . - We need laboratory experiments to learn about chemistry But we need correct procedures to minimize hazards in laboratory REMEMBER we are dealing with dangerous chemicals All chemicals and instruments may be DANGEROUS to you or to your classmates.

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Laboratory Safety. Mr. Zach Hawkins Hereford High School Physics and Chemistry. Purpose of Lab Safety. Classes per day 5 Students per class 30 Number of years in a career 30 5*30*30 = 4500 Students in a career Your safety % if someone got hurt (4499/4500)*100 = 99.97%

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Laboratory Safety. Lehman College Environmental Health &amp; Safety November 2011. Introduction. Regulatory agencies and laboratory safety. Federal, State, and NYC regulatory agencies. Occupational Safety &amp; Health Administration

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Safety in the Chemical Laboratory Chemistry 550

Bill Diesslin, CHMM, CSP Assistant Director, ISU EH&amp;S 294-2105 [email protected]. Safety in the Chemical Laboratory Chemistry 550. Demonstrate what we know about risk and injury Discuss why safety is a hard sell Outline the importance of this class

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UC Davis Safety Services Monthly Safety Spotlight April 2010: Chemical and Laboratory Safety

UC Davis Safety Services Monthly Safety Spotlight April 2010: Chemical and Laboratory Safety. Safety Discussion Topics Critical Questions to Ask Laboratory Safety Basics – A Helpful Checklist Cover Up! Protect your skin Employee Illness or Injury? Reporting Required!

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LABORATORY SAFETY. Chemical Hazard Label. What is a MSDS sheet?. A Material Safety Data Sheet (MSDS) is designed to provide both workers (students and staff at SHS) and emergency personnel with the proper procedures for handling or working with a particular substance (chemical or element).

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Safety Regulations In The Chemical Laboratory

Safety Regulations In The Chemical Laboratory . Bryan McGowan Safety Officer School of Chemistry Room: 252 Ext: 4-4027 Mobile: 0431 688 447 Email: [email protected] Sioe See Volaric Deputy Safety Officer Room: 380 Ext: 4-6472 Email: [email protected] Christian Rantzau

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LABORATORY SAFETY “Chemical Hygiene Training”

LABORATORY SAFETY “Chemical Hygiene Training”. Occupational Exposure to Hazardous Chemicals in Laboratories OSHA : 29 CFR 1910.1450. STANDARD APPLIES TO:. Employees engaged in the laboratory use of hazardous chemicals

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CHEMICAL LABORATORY

CHEMICAL LABORATORY. Jan Michalíček Jitka Herzogová Faculty of Chemistry Brno University of Technology 2005. What‘s a chemical laboratory?. a place for special researches different kinds of laboratories (analytical, physicochemical, organic, inorganic, etc.) necessary equipment

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Aspects of Chemical Laboratory Safety

Aspects of Chemical Laboratory Safety. Materials Engineering OHSE Induction to Chemical Use Doug Rash Convenor Zone 13 (School of Chemistry) Deputy Safety Officer and Environmental Officer. Some basic laboratory safety rules.

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Part One. Laboratory and Chemical Safety . Sheharbano “Sheri” Sangji, a 23-year-old University of California at Los Angeles staff research assistant, died in 2008 after suffering massive second- and third-degree burns when a chemical she was handling caught fire.

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