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Date of Issue : SEP 1996 1. IDENTIFICATION
General Product Name : POTASSIUM HYDROXIDE Other Names : CAUSTIC POTASH ; POTASSIUM HYDRATE ; LYE UN No. : 1813 Dangerous Goods Class : 8 Subsidiary Risk : None Allocated Hazchem Code : 2R Pack Group : II EPG : 8A1 Poisons Schedule : 6 Uses : Soap manufacture, bleaching, manufacture of Potassium Carbonate and Tetrapotassium pyrophosphate, electrolyte in alkaline storage batteries, absorbent for CO2 & hydrogen sulphide, dyestuffs, liquid fertilisers, food additive, herbicides, electroplating, mercerising, paint removers, reagent.
1.1 Physical Description / Properties
Appearance : White deliquescent flakes, odourless.ý ý Formula : KOH Boiling Point : 1320 deg C Melting Point : 360 deg C Vapour Pressure : N/A Specific Gravity : 2.04 (water = 1) Flash Point : N/A pH : 14 (100g/L H2O @ 20oC) Solubility in water : 1150 g/l (25 deg C) Flammability Limits (as percentage volume in air) Lower Explosion Limit : N/A Upper Explosion Limit : N/A 1.2 Other Properties
Soluble in water, alcohol, glycerol, slightly soluble in ether. 1.3 Ingredients
2. HEALTH HAZARD INFORMATION
2.1 Health Effects - Acute Swallowed
Extremely corrosive - causes sever burns. Ingestion may cause intestinal perforation, nausea, vomiting, mouth burns. Eye
Extremely corrosive - causes severe burns to eyes. Skin
Extremely corrosive - causes severe burns. Inhaled
Extremely corrosive - causes severe burns. 2.2 Health Effects - Chronic
No data available
2.3 First Aid
Swallowed
Drink 1 - 3 cups of water. Seek medical assistance immediately.
Eye
Wash eyes immediately with plenty of water for at least 15 minutes, ensuring eyelids are held open. Consult an ophthalmologist.
Skin
Wash the affected areas thoroughly with plenty of water for at least 15 minutes. Seek medical assistance to treat burns.
Inhaled
Remove affected person to fresh air, avoid becoming casualty, and keep patient warm. Seek immediate medical attention.
First Aid Facilities
Ensure an eye bath and safety shower are available and ready for use.
2.5 Advice to Doctor
Wash skin until soapiness feeling disappears. Treat symptomatically based on judgement of doctor and individual reactions of patient.
2.6 Toxicity Data
Oral LD50 = 273 mg/kg (Rat) Dermal LD50 = not available Inhalation LC50 = not available
3. PRECAUTIONS FOR USE
3.1 Exposure Standards
TWA = 2 mg/m3 peak level
3.2 Engineering Controls
Provide adequate ventilation to ensure exposure levels do not exceed standards.
3.3 Personal Protection
Respiratory - dust-proof masks. Eyes - goggles or face screen. Skin - acid-proof overalls, rubber or PVC gloves and boots, plastic aprons. DO NOT smoke, drink or eat in storage areas or during handling.
3.4 Flammability
Material will not burn. SAFE HANDLING INFORMATION
4.1 Storage / Transport
Transport or store in a dry place. Transport or store away from strong acids.
4.2 Packaging / Labelling UN No. 1813 Class 8 Sun Risk None Allocated Hazchem Code 2R Pack Group II EPG No. 8A1 Shipping Name POTASSIUM HYDROXIDE Hazard VERY CORROSIVE
Risk Phrases R35 Causes severe burns. R41 Risk of serious damage to eyes.
Safety Phrases S2 Keep out of reach of children. S26 In case of contact with eyes, rinse immediately with plenty of water and contact a doctor or . S37/39 Wear suitable gloves and eye/face protection.
4.3 Spills and Disposal
Spills
Wear full protective clothing and avoid raising dust. Prevent product from entering rivers, canals or other waterways.
Disposal
Take above mentioned precautions. Once the product spill is neutralised, take it to a controlled dumping site if possible. DO NOT act without adequate protective equipment. Observe all Local, State and Federal regulations for disposal.
4.4 FIRE AND EXPLOSION HAZARD Fire / Explosion
Not inflammable or explosive, but reactions with metal can generate hydrogen gas, which is inflammable in air (between 4 and 75% by volume). May start fires in contact with fuels. Avoid contact with aluminium, tin, zinc and alloys (brasses), chrome and lead. Highly exothermic reaction with strong acids. Material is stable under normal conditions of use. Forms very corrosive basic solutions with water.
Extinguishing Media
Wear full protective clothing including self-contained breathing apparatus. Use abundant amounts of water in spray form. The heat generated in contact with water (dissolution heat) may suffice to ignite other combustible materials. Control water used and prevent it from entering waterways. 5 OTHER INFORMATION
Other Information
Being hygroscopic, material absorbs moisture and its lyes alkalinise the soil. Product yields carbonate in contact with air and moisture. Aquatic toxicity : hazardous to living organisms in high concentrations.
5.1 Contact Points
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The information above is believed to be accurate and represents the best information currently available to us. However, we make no warranty of merchantability or any other warranty, express or implied, with respect to such information, and we assume no liability resulting from its use.
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