Laboratory Safety

dangerously reactive material

(old WHMIS symbol)

lower

Does a lower or higher hazard number mean that the product is more dangerous

identification, hazard identification, composition, first aid, fire-fighting, accidental release, handling, storage, personal protection, physical/chemical properties, stability/reactivity, toxological information, ecological information, disposal, transportation, regulatory information

Name a few of the sections that the SDS is divided

hair

________ should be tied back so that it does not become part of your experiment

viscosity

a measure of a liquid's resistance to flow; high when fluid is thick

vapour pressure

a measure of how much a substance can accumulate as vapour above the liquid or solid

carcinogen

a mutagen may also be a ____________

asphyxiant

a substance that reduces or displaces the normal oxygen concentration in breathed air; can cause unconsciousness or death by suffocation

high

a substance with a low boiling point will always have a __________ vapour pressure producing a vapour hazard

immediately

all spills should be cleaned up _____________

category 1

category considered to be the most hazardous within a class

Physical Hazards

class that represents hazards related to the physical and chemical properties of a product such as its flammability, reactivity or corrosivity to metals

environmental hazards

class that represents hazards to aquatic environments

health hazards

class that represents hazards to health arising from exposure o a substance or mixture such as acute toxicity or skin sensitization

closed

containers or bottles of liquids to be stored in the lockers must be _____________

persistence

describes a substance that does not degrade into small inorganic molecules

SDS

documents that provide detailed information about a chemical, more than the product label

chronic aquatic toxicity

environmental hazard that covers products that cause adverse effects to aquatic organisms during exposures that are determine in relation to the life cycle of the organism

acute aquatic toxicity

environmental hazard that covers products that cause injury to an aquatic organism in a short term exposure

pictograms

graphic images that immediately depict what type of hazard a product depicts

acute toxicity

health hazard that covers products that are fatal, toxic, or harmful if inhaled, following skin contact or if swallowed; could be due to direct contact with product or due to product coming into contact with water and releasing a gaseous substance

skin corrosion

health hazard that covers products that cause severe skin burns or irritation

aspiration hazard

health hazard that covers products that may be fatal if they are swallowed and enter the airways

respiratory sensitization

health hazard that covers products that may cause allergies or asthma symptoms or breathing difficulties if inhaled

skin sensitizer

health hazard that covers products that may cause an allergic skin reaction

carcinogenicity

health hazard that covers products that may cause cancer

target organ toxicity

health hazard that covers products that may cause damage to organs following prolonged or repeated exposure

germ cell mutagenicity

health hazard that covers products that may cause genetic defects to body cells that can be passed onto future generations

reproductive toxicity

health hazard that covers products that may damage fertility or the unborn child

biohazardous infectious materials

health hazards that covers microorganisms, nucleic acids, or proteins that cause infection with or without toxicity within humans or animals

15-20

how many minutes should reagents be washed off with water for after coming in contact with the skin

turn off source

if a fire occurs in the lab what is the first step that should be taken

1.0

if a substance has a density of less than ________ the substance will float on water

pH

indicates if the substance is acidic or basic or neutral

16

number of sections that the SDS is divided into

under pressure

physical hazard class that covers products that are compressed gases, dissolved gases, and refrigerated liquefied gases that may explode if heated or may be so severely cold that they cause burns

combustible dust

physical hazard class that covers products that are finely divided solid particles, that if dispersed in air may catch fire or explode if ignited

corrosive

physical hazard class that covers products that can chemically damage or destroy metals

pyrophoric

physical hazard class that covers products that catch fire quickly and spontaneously if exposed to air

flammable

physical hazard class that covers products that have the ability to ignite easily and their main hazards are fire or explosions

self reactive

physical hazard class that covers products that may cause a fire or explosion or their own, possibly when heated

oxidizing

physical hazard class that covers products that may cause or intensify a fire or cause a fire or explosion

simple asphyxiants

physical hazard class that covers products that may displace oxygen in air and cause rapid suffocation

self heating

physical hazard class that covers products that will ignite only after being exposed to air for a long period of time or in large amounts

carcinogen

refers to a substance capable of causing canceer in living tissue

irritant

refers to a substance that aggravates tissue

mutagen

refers to a substance that can induce or increase the rate of frequency of permanent genetic mutations in an organism

pyrophoric

refers to a substance that ignites spontaneously when it comes in contact with air (and often also water)

teratogen

refers to a substance that interferes with the development of an embryo or fetus and may cause birth defects of end a pregnancy

acute exposure

refers to exposure occuring over a short period of 24 hours or less

chronic exposure

refers to repeat exposures occurring over a long period of time

LC50

refers to the concentration of chemicals in the air that kill 50% of test animals over a set period of time

flammability limits

refers to the concentration range of vapours in which a flammable substance can produce a fire or explosion when an ignitions source is present

vapour density

refers to the density of a substance compared to air

specific gravity

refers to the density of the substance compared to water

odour threshold

refers to the level in parts per million at which most people will be able to smell the substance

bioaccumulative potential

refers to the likelihood that a substance can be absorbed into an organism and accumulate at a rate greater than which the substance is removed from the body (pass through the food chain)

lower flammability limit

refers to the lower end of the concentration range below which the mixture lacks sufficient amount of flammable substance to burn

flash point

refers to the lowest temperature at which a given liquid gives off sufficient vapour to ignite the air in the presence of an ignition source

auto-ignition temperature

refers to the lowest temperature at which a substance will spontaneously ignite in a normal atmosphere without an external source of ignition

ecotoxicity

refers to the potential for a substance to cause stresses on the ecosystem by its level of toxicity on aquatic or terrestrial organisms

mobility in soil

refers to the potential of a substance, if released to the environment to move under natural forces to the groundwater or to a distance from the site of release

partition coefficient

refers to the ratio of the concentration of a solute in two immiscible or slightly miscible liquids; measure in solubility of the compound in each liquid

evaporation rate

refers to the speed at which a liquid or solid turns into a vapour; higher means more vapour hazard

LD50

refers to the standard measure of acute toxicity stated in milligrams of substance per kg of body weight and the value represents the individual dose required to kill 50% of a population

boiling point

refers to the temperature at which a liquid boils

decomposition temperature

refers to the temperature at which a substance chemically decomposes breaking into elements or simpler compounds

upper flammability limit

refers to the upper end of the concentration range, above this, the mixture contains too much substance and too little oxygen to burn

loose

should pants worn in the lab be tight or loose fitting

fume hood

storage bottles for all organic wastes or heavy metal ion wastes can be found under the _______________

greater

the lower the flash point, the _______________ the fire hazard

7

the number of the assembly area for S269 found by going down the stairs at the middle of the building

water

to treat minor burns, soak the injury in __________

false

true of false, unused materials that were obtained from their container for the lab may be returned as to not waste them

false

true or false, a product will only have one pictogram on their label and SDS

true

true or false, backpacks are not allowed at the lab bench, only bring your notebook with you

false

true or false, eating, drinking, or chewing gum in the lab is allowed at some times

true

true or false, every chemical should be considered potentially hazardous because they are ALL dangerous if entered into the body

true

true or false, headphones are banned from the lab

false

true or false, it is okay for a student to have parts of their legs exposed as long as they are wearing closed shoes and a lab coat

true

true or false, there are no situations in the lab in which safety goggles and lab coats may not be worn

dilute

waste liquids in the form of __________ acids or bases may be washed down the sink with large quantities of water

physical, health, environmental

what are the three types of hazard groups in the new WHMIS 2015

wash hands

what is the last thing that you must do before leaving the lab

taste

what is the one sense that is NEVER used in the lab

spill kit

what must be used to clean up concentrated acids and bases if they are spilled

wafting

what technique should be used to smell a chemical

1A

what would be more hazardous, category 1A or category 1B

sink; low

when a substance has density below 1.0 it will _____________ in air and concentrate in __________ areas

garbage

where should solid waste be disposed of unless otherwise informed

danger

which signal word is more severe, danger or warning

closed toe

which type of shoes must be worn in the lab

mouth

while heating substances in a test tube, care should be taken that the _____________ of the test tube is not aimed at anyone