Safety Data Sheets of Phosphorous Acid
PHYSICAL DESCRIPTION/ PROPERTIES
Appearance, odour : White crystals, faint odour.
Freezing Point (85%) : 74¡ãC
Boiling Point : 200¡ãC @760 mmHg
Specific Gravity (20¡ãC) : 1.651
Vapour Pressure (20¡ãC) : Not Available.
Vapour Density (air=1) : Not Available
Flash Point (closed cup) : Not Available.
Flammability Limits (%) : Not Available.
Solubility : Soluble in alcohol
Stability & Reactivity : Not Available
Formula : H3PO3
Molecular Weight : 82
Chemical Name CAS Number Proportion
Phosphorous 13598-36-2 >98%
Ingredients not considered Hazardous by Worksafe Australia to
No adverse health effects expected if the product is handled in
accordance with this Safety Data Sheet and the product label,
if applicable. Symptoms that may arise if the product is mishandled
SWALLOWED: May cause severe damage to the digestive tract. May
be harmful if swallowed. Causes gastrointestinal burns.
EYE: Causes eye burns.
SKIN: Causes skin burns.
INHALED: Vapour or mist may cause severe irritation to mucous
membranes and respiratory tract. Symptoms include sore throat,
coughing, shortness of breath and delayed lung edema.
No information available.
SWALLOWED: If swallowed, rinse mouth with water, give water to
drink. DO NOT INDUCE VOMITING. Seek immediate medical assistance.
EYE: Immediately irrigate with copious quantities of water for
at least 15 minutes. Eyelids to be held open. Seek medical assistance.
SKIN: Wash contaminated skin with plenty of soap and water. Remove
contaminated clothing and wash before re-use. If irritation persists
seek medical advice.
INHALED: Remove victim from exposure - avoid becoming a casualty.
Remove contaminated clothing and loosen remaining clothing. Allow
patient to assume most comfortable position and keep warm. Keep
at rest until fully recovered. If breathing laboured and patient
cyanotic (blue) ensure airways are clear and have qualified person
give oxygen through a facemask. If breathing has stopped apply
artificial respiration at once. In event of cardiac arrest, apply
external cardiac massage. Seek medical assistance.
ADVICE TO DOCTOR
No information available.
Nuisance dust of 10 mg/m3 (TWA) should be observed.
Ensure ventilation is adequate to maintain air concentrations
below recommended exposure standard. Keep containers closed when
not in use.
Avoid skin and eye contact and inhalation of dust. Wear overalls,
safety goggles/glasses and chemical resistant impervious gloves
and safety boots. Use with adequate ventilation. If inhalation
risk exists wear respirator meeting the requirements of the relevant
Product is not flammable.
STORAGE AND TRANSPORT
Store in cool dry, well-ventilated place in closed packs. Do not
store with incompatible products such as oxidising agents. Store
away from foodstuffs.
This product is classified as a Class 8 corrosive substance according
to the Australian Code for the transport of dangerous goods by
road and rail.
Refer to State Regulations for storage and transport requirements.
Increase ventilation. Wear protective equipment to prevent skin
and eye contamination and inhalation of dust. Sweep up but avoid
generating dust. Collect and place in properly labelled drums
for disposal. If contamination of sewers or waterways has occurred
advise the local emergency services,
Refer to State Land Waste Management Authority.
On burning will emit toxic fumes. Hazardous decomposition products:
phosphine, oxides of phosphorus. Fire fighters to wear full protective
clothing and self-contained breathing apparatus if risk of exposure
to vapour or products of combustion.
EXTINGUISHING MEDIA: Dry chemical powder.
INFORMATION AND REFERENCES
Avoid contaminating waterways.
Oral LD50 (rat): 1895 mg/kg
Hazard Category: Harmful/Corrosive
R22: Harmful if swallowed.
R34: Causes burns
S25: Avoid contact with eyes.
S36/37/39: Wear suitable protective clothing, gloves and eye/face
S45: In case of accident or if you feel unwell, seek medical advice
immediately (show the label whenever possible).