TYPES OF HAZARD
|ACUTE HAZARDS / SYMPTOMS||PREVENTION||FIRST AID / FIRE-FIGHTING|
|FIRE||Highly flammable. Many reactions may cause fire or explosion.||NO open flames, NO sparks and NO smoking. NO contact with water.||NO water. NO hydrous agents. Use dry powder, dry sand.|
|EXPLOSION||Risk of fire and explosion on contact with water, moisture or metals.||In case of fire: keep cylinder cool by spraying with water. NO direct contact of the substance with water.|
|EXPOSURE||AVOID ALL CONTACT!||IN ALL CASES CONSULT A DOCTOR!|
|Inhalation||Sore throat. Cough. Burning sensation. Shortness of breath. Laboured breathing.||Use local exhaust and breathing protection.||Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer immediately for medical attention.|
|Skin||Redness. Pain. Serious skin burns.||Protective gloves. Protective clothing.||First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. Refer immediately for medical attention.|
|Eyes||Redness. Pain. Blurred vision. Severe deep burns.||Wear face shield or eye protection in combination with breathing protection.||Rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention.|
|Ingestion||Burns in mouth and throat. Burning sensation in the throat and chest. Shock or collapse.||Do not eat, drink, or smoke during work.||Rinse mouth. Do NOT induce vomiting. Refer immediately for medical attention.|
|PACKAGING & LABELLING|
|Remove all ignition sources. Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Sweep spilled substance into covered dry plastic containers. Carefully collect remainder. Then store and dispose of according to local regulations. Do NOT wash away into sewer.||
Put breakable packaging into closed unbreakable container.
Do not transport with food and feedstuffs.
Symbol: F, C; R: 11-14-34; S: (1/2)-8-16-26-43-45
UN Hazard Class: 4.2; UN Subsidiary Risks: 8
Self-heating; may catch fire
Causes severe skin burns and eye damage
|EMERGENCY RESPONSE||SAFE STORAGE|
|Fireproof. Separated from strong oxidants, acids, metals and food and feedstuffs. Dry. Cool. Well closed. Store in an area having corrosion resistant concrete floor. Store in an area without drain or sewer access.|
Physical State; Appearance
WHITE-TO-YELLOW HYGROSCOPIC POWDER.
Occupational exposure limits
Routes of exposure
Serious local effects by all routes of exposure.
Effects of short-term exposure
Effects of long-term or repeated exposure
|PHYSICAL PROPERTIES||ENVIRONMENTAL DATA|
Melting point: No melting point; decomposes at >50°C
Density: 1.7 g/cm³
Solubility in water: reaction
Vapour pressure, Pa at 25°C: (negligible)
Flash point: 11°C c.c.
Auto-ignition temperature: >50°C
Octanol/water partition coefficient as log Pow: -0.74
|This substance may be hazardous to the environment. Special attention should be given to aquatic organisms.|
Potassium methylate is a very reactive solid and is handled in solution in most cases. The solid is very hygroscopic and decomposes quickly. It is only stable under exclusion of air and moisture.
Reacts violently with fire extinguishing agents such as water.
Rinse contaminated clothing with plenty of water because of fire hazard.
Card has been partially updated in April 2010: see Explosion; Physical Dangers.
See Also: Toxicological Abbreviations