sec-Butanol (sec-Butanol)

It is used as raw materials for manufacturing methyl ethyl ketone, synthetic essence, dye and so on, and is also used as solvent.

Preparation Method of SEC-butyl alcohol (78-92-2): This product is obtained by hydrolysis of butene in cracked oil or natural gas after adsorption in sulfuric acid. Storage method: Store in a cool and ventilated warehouse. Keep away from fire and heat source. The temperature should not exceed 37℃. Keep the container sealed. It should be stored separately with oxidant, acid, halogen, etc., and should not be stored in mixed storage. Explosion-proof lighting and ventilation facilities are adopted. It is forbidden to use mechanical equipment and tools that are easy to generate sparks. The storage area shall be equipped with leakage emergency treatment equipment and appropriate containment materials. Distinguishing test: 1. Soluble in water; Miscible in ethanol and ether. According to OT-42 method. 2. Relative density 0.806~0.809. 3. Should conform to the infrared spectrum of figure 19302. Quality Index analysis: 1. Take 60g of sample with acidity (acetometer), add several drops of phenolphthalein test solution (TS-167), titrate with 0.1mol/L potassium hydroxide ethanol solution until pink appears, and maintain 15s. The consumption must not exceed 0.3ml. 2. Aldehyde and ketone (calculated as butyraldehyde) are determined by OT-7 method. Take 10g of sample amount and calculate the equivalent factor (e) and take 36.06. Others: occupational exposure limit (China) no standard occupational exposure limit (US) TLV-TWA: 100ppm monitoring method no data engineering control production process closed, full ventilation. Provide safety shower and eye washing equipment respiratory system protection generally do not need special protection, can wear filter type antivirus mask (half mask) when contacting with high concentration eye protection Dai 'an full protection bicycle glasses body protection wear anti-static work clothes hand protection wear general work protective gloves other protection work site smoking is strictly prohibited. Maintain good hygiene habits. Toxicity: acute toxicity LD50:2193 mg/kg (rat oral);4893 mg/kg (rabbit oral);>2000 mg/kg (rat percutaneous) irritant rabbit percutaneous: 500mg(24h), mild stimulation. Rabbit eye: 100mg(24h), moderate stimulation of other rats inhalation Minimum poisoning concentration (TCLo):5000ppm/7H (pregnancy 1 ~ 19d), resulting in embryotoxicity. Ecotoxicity LD50:4300mg/L(24h)(goldfish). IC 50:312mg/L(72h)(algae) biodegradable Aerobic Biodegradation (h):24~168. Anaerobic Biodegradation (h):96~672 photooxidation half-life (h) in non-biodegradable water: 3100~1.00 × 106. The half life of photo oxidation in air (h):7.2~72. Waste nature hazardous waste disposal method it is recommended to use incineration method to dispose waste matters needing attention should refer to relevant national and local laws and regulations before disposal. Emergency treatment of leakage: quickly evacuate the personnel from the contaminated area to the safe area, isolate them, and strictly restrict access. Cut off the fire source. It is recommended that emergency personnel wear self-contained positive pressure respirators and fire protection clothing. Cut off the leakage source as much as possible. Prevent access to restricted spaces such as sewers and floodwater draining channel. Small leakage: absorbed by activated carbon or other inert materials. It can also be washed with plenty of water, diluted by washing water and put into the waste water system. Large amount of leakage: Build a embankment or dig a pit for shelter; Cover with foam to reduce steam disasters. Use explosion-proof pump to transfer to tank car or special collector, recycle or transport to waste disposal site for disposal. Protective measures: 1. Respiratory system protection: no special protection is generally required, and self-priming filter type antivirus mask (half mask) can be worn during high concentration contact. 2. Eye protection: Dai an anti-bicycle glasses. 3. Body protection: wear anti-static overalls. 4. Hand protection: wear general work protective gloves. 5. Others: Smoking is strictly prohibited at the work site. Maintain good hygiene habits. First aid measures: 1. Skin Contact: remove contaminated clothes and rinse the skin thoroughly with soap and water. See a doctor. 2. Eye contact: lift the eyelid immediately and rinse thoroughly with plenty of flowing water or normal saline for at least 15 minutes. See a doctor. 3. Inhalation: quickly leave the scene to the fresh air. Keep respiratory tract unobstructed. If you have difficulty breathing, give oxygen. If breathing stops, artificial respiration is performed immediately. See a doctor. 4. Eating: drink enough warm water to induce vomiting. See a doctor. 5. Fire extinguishing method: keep the fire container cool with mist water, spray the escaping liquid with water, dilute it into incombustible mixture, and protect the firefighters with mist water. Fire extinguishing agent: soluble foam, dry powder, carbon dioxide, foggy water, 1211 fire extinguishing agent, sand.