Potassium hydroxide is a white rhombic crystal, and industrial products are white or light gray block and rod shaped. Relative density 2.044 (20 ℃). Melting point 360.4 ℃. Boiling point 1320~1324 ℃. It is easily soluble in water and emits a large amount of heat when dissolved. It has strong water absorption ability and can absorb water to dissolve in the air, gradually transforming carbon dioxide into potassium carbonate. Soluble in ethanol, slightly soluble in ether. It has extremely strong alkalinity and corrosiveness, and its properties are similar to those of caustic soda. The refined naphthalene manufacturer will explain to you:
1、 Physical and chemical properties:
Appearance and properties: White crystals, easily deliquescent.
Melting point (oC): 360.4
Solubility: Soluble in water and ethanol, slightly soluble in ether
Boiling point (oC): 1320
Relative density (water=1): 2.04
Saturated vapor pressure (kPa): 0.13 (719 ℃)
Risk of combustion and explosion
Combustion decomposition products: May produce harmful toxic smoke
Polymerization hazard: non polymerization
2、 Other safety precautions:
Taboos: Strong acids, flammable or combustible substances, carbon dioxide, anhydride, acyl chloride.
Flammability: This product is non flammable, highly corrosive and irritating, and can cause burns to the human body.
Hazard characteristics: Neutralization reaction with acid and release of heat. This product does not burn and releases a large amount of heat when exposed to water and steam, forming a corrosive solution. Has strong corrosiveness.
Fire protection measures: Use water and sand to extinguish the fire, but it is necessary to prevent items from splashing and causing burns when exposed to water.
Exposure limit of former Soviet Union MAC (mg/m3): 0.5; TLVWN：ACGIH2mg/m3
Acute toxicity: LD50: 273mg/kg (rat oral) LC50: No data available
This product has strong corrosiveness. Dust irritates eyes and respiratory tract, corrodes nasal septum; Direct contact between skin and eyes can cause burns; Misadministration can cause gastrointestinal burns, mucosal erosion, bleeding, and shock.
Skin contact: Immediately remove contaminated clothing and rinse with plenty of flowing water for at least 15 minutes. Seek medical attention. Eye contact: Immediately lift the eyelids and rinse thoroughly with a large amount of flowing water or physiological saline for at least 15 minutes. Seek medical attention.
Inhalation: Quickly remove from the scene to a place with fresh air. Maintain unobstructed respiratory tract. If breathing is difficult, administer oxygen. If breathing stops, immediately perform artificial respiration. Seek medical attention.
Ingestion: Rinse mouth with water and drink milk or egg white. Seek medical attention.
Engineering control: closed operation. Provide safety showers and eye wash equipment.
Respiratory system protection: When there is a possibility of contact with its dust, it is necessary to wear a hood type electric air supply filter dust respirator. If necessary, wear an air respirator. Body protection: Wear rubber acid and alkali resistant clothing.
Eye protection: Protective measures have been taken in respiratory system protection.
Hand protection: Wear rubber acid and alkali resistant gloves.
Other protections: Smoking, eating, and drinking are prohibited at the workplace, and hands should be washed before meals. After work, take a shower and change clothes. Pay attention to personal cleanliness and hygiene.
Isolate the contaminated area and restrict access. It is recommended that emergency personnel wear dust masks (full face masks) and acid and alkali resistant work clothes. Do not come into direct contact with leaks. Small leakage: Collect with a clean shovel in a dry, clean, and covered container. You can also rinse with a large amount of water, dilute the washing water and put it into the wastewater system. Large amount of leakage: collected for recycling or transported to waste disposal sites for disposal
storage and transportation
Store in a cool, dry, and well ventilated warehouse. Keep away from sparks and heat sources. The humidity inside the warehouse shall not exceed 85%. The packaging must be sealed and protected from moisture. It should be stored separately from flammable (combustible) substances, acids, etc., and mixed storage should be avoided. The storage area should be equipped with suitable materials to contain leaks.
Transportation: During railway transportation, steel drum packaging can be transported by gondola cars. The packaging should be complete during shipment and the loading should be secure. During transportation, it is necessary to ensure that the container does not leak, collapse, fall, or be damaged. It is strictly prohibited to mix and transport flammable or combustible materials, acids, edible chemicals, etc. Transport vehicles should be equipped with leakage emergency response equipment during transportation. For more relevant content, come to our website http://www.jnjdbc.cn Consult!