RISK ASSESSMENT
SCHOOL:
Experiment 4.5 Removing a salt by evaporation and crystallisation
Description of procedure (attach a copy of the experiment)
HAZARDOUS substance as classified by NOHSC
Reactant or
product name and
concentration
Dangerous
goods
Hazard
level
Risk phrases
Safety phrases
Matches
yes
extreme
Flammable
Harmful if swallowed.
Toxic by inhalation
Irritating to eyes
May cause SENSITISATION
by inhalation and skin contact
May cause CANCER
May cause heritable genetic
damage
Harmful: danger of serious
damage to health by prolonged
exposure through inhalation
Toxic to aquatic organisms,
may cause long-term adverse
effects in the aquatic
environment
May impair fertility
May cause harm to the unborn
child
Cumulative effects may result
following exposure.
May produce discomfort of the
respiratory system and skin
Keep locked up
Do not breathe dust.
Avoid contact with skin.
Avoid contact with eyes.
Wear suitable protective clothing.
In case of insufficient ventilation,
wear suitable respiratory equipment
Use only in well ventilated areas.
Wear suitable gloves.
Wear eye/face protection.
Use only in well ventilated areas
Keep container in a well ventilated
place
Avoid exposure – obtain special
instructions before use.
Do not empty into drains
To clean the floor and all objects
contaminated by this material, use
water and detergent.
This material and it’s container must
be disposed of in a safe way
Keep away from food, drink and
animal feeding stuffs.
Take of immediately all
contaminated clothing
In case of contact with eyes, rinse
with plenty of water and contact
Doctor or Poisons Information
Centre.
Use appropriate container to avoid
environmental contamination
Avoid release to the environment
This material and its container must
be disposed of as hazardous waste
In case of accident by inhalation,
remove casualty to fresh air and
keep at rest
MSDS
date
Reactant or
product name and
concentration
Dangerous
goods
Hazard
level
Risk phrases
Safety phrases
MSDS
date
NON HAZARDOUS substance as classified by NOHSC
Sodium chloride – 1M
solution
no
low
Cumulative effects may result
following exposure.
Do not breathe
gas/fumes/vapour/spray
Avoid contact with skin.
Other hazards and possible risks
Risk of burns from naked flame, hot liquid and equipment
Risk of hot salt spitting and splattering
Protective measures
Lab coat
Safety glasses
yes
yes
Gloves
Fume cupboard
Other
Student clean up and disposal of wastes
Return all waste to the laboratory technician.
To clean the work bench and all objects contaminated by these materials, use water and detergent.
Assessor’s signature: __________________________________
Date: __________________
***** This assessment is not valid until it has been completed and signed by an assessor
approved by the school. The assessment will cease to be valid 5 years after the above date.
All teachers are to sign the following statement before conducting this experiment.
I have read this risk assessment and I understand the safety procedures and risks involved
Teacher’s Name
Teacher’s signature
Date:
Disposal of waste and lab technician notes.
Disposal may be subject to local laws and regulations and these should be considered first
Recycle wherever possible.
****NOTES:
 Individual schools have a legal obligation to acquire their own manufacturer’s MSDS and produce a risk
assessment relevant to their own situation.
 This risk assessment sheet is provided for your guidance only.
 Disposal of waste is subject to the laws and regulations of states, territories and local authorities.
 It is not to be assumed that products bought from supermarkets are non hazardous.
DISCLAIMER:
These guidelines are designed to serve as a general reference only. It does not replace the schools legal obligation to
provide a valid risk assessment to ensure the safety of the staff and students conducting this experiment. While the
Publisher has endeavoured to ensure that the material provided is free from error, the Publisher does not warrant the
accuracy, adequacy or completeness of that material or that the material is suitable for your intended use. To the fullest
extent permitted by law the Publisher disclaims all responsibility for any actions taken or not taken in relation to the material
provided.