How to protect phosphorus trichloride

Phosphorus trichloride violently decomposes when exposed to water, producing a large amount of heat and smoke, and may even explode. It is corrosive to many metals, especially in the presence of moist air. Hydrochloric acid mist can be generated in the air. It has a strong irritating effect on the eyes and respiratory mucosa. Liquid or concentrated gas can cause skin burns, serious eye damage, and even blindness. Acute poisoning causes conjunctivitis, bronchitis, pneumonia and pulmonary edema, with symptoms such as cough, tearing, runny nose, salivation, eye and throat tingling, chest tightness, shortness of breath and other symptoms. chronic effects: Increased respiratory tract irritation symptoms, tooth loss, etc. The key is to seal the production equipment and set up ventilation facilities so that materials can be removed in time when leaks occur. Emergency equipment such as eye washers and showers are also prepared.

Close operation and pay attention to ventilation. The operation should be as mechanized and automated as possible. Operators must undergo special training and strictly abide by operating procedures. It is recommended that operators wear self-priming filter gas masks (full face masks), chemical safety glasses, rubber acid and alkali resistant clothing, and rubber acid and alkali resistant gloves. Prevent vapors from leaking into the workplace air. Avoid contact with oxidants, acids, and alkalis. Be particularly careful to avoid contact with water. When handling, load and unload with care to prevent damage to packaging and containers. Equipped with leakage emergency treatment equipment. Empty containers may contain harmful residues. skin contact: Take off contaminated clothing immediately and absorb the liquid immediately with clean cotton or cloth. Rinse with plenty of running water. Seek medical attention. eye contact: Immediately lift your eyelids and rinse thoroughly with plenty of running water or saline for at least 15 minutes. Seek medical attention. inhalation: Leave the scene quickly and get to fresh air. Keep your airway open. If breathing is difficult, give oxygen. If breathing stops, perform artificial respiration immediately. Seek medical attention. ingest: Rinse your mouth with water and perform gastric lavage if there are no symptoms of corrosion. Avoid taking oils. Seek medical attention. Emergency treatment: People in the leaked contaminated area were quickly evacuated to a safe area, immediately isolated 150m, and access was strictly restricted. It is recommended that emergency responders wear self-contained positive pressure respirators and acid and alkali proof overalls. Do not come into direct contact with spilled material. Cut off the source of the leak as much as possible. small leak: Absorb with sand, vermiculite or other inert material. massive leaks: Build dikes or dig pits for containment. Clear with expert guidance. Storage precautions: Store in a cool, dry, well-ventilated warehouse. Keep away from fire and heat sources. The storage temperature does not exceed 25°C and the relative humidity does not exceed 75%. The packaging must be sealed and protected from moisture. They should be stored separately from oxidants, acids, alkalis, and food chemicals, and avoid mixed storage. It should not be stored for a long time to avoid deterioration. The storage area should be equipped with emergency release equipment and suitable containment materials.

[Health Hazards] This product can generate hydrochloric acid mist in the air. It has irritating and corrosive effects on skin and mucous membranes. Inhaling a large amount of vapor in a short period of time can cause upper respiratory tract irritation symptoms, pharyngitis, bronchitis, and in severe cases, laryngeal edema leading to suffocation, pneumonia or pulmonary edema. Skin and eye contact may cause irritation or burns. Severe eye burns can cause blindness. [Protection] Wear rubber acid and alkali resistant clothing, chemical safety glasses and rubber acid and alkali resistant gloves when operating. When possible contact with its vapors, a self-priming filter respirator (full face mask) or isolation respirator must be worn. During emergency rescue or evacuation, it is recommended to wear air respirators. [Treatment] Skin contact: Take off contaminated clothing immediately and absorb the liquid immediately with clean cotton or cloth. Rinse with plenty of running water. Seek medical attention. eye contact: Immediately lift your eyelids and rinse thoroughly with plenty of running water or saline for at least 15 minutes. Seek medical attention. inhalation: Leave the scene quickly and get to fresh air. Keep your airway open. If breathing is difficult, give oxygen. If breathing stops, perform artificial respiration immediately. Seek medical attention. ingest: Rinse your mouth with water and lavage your stomach carefully. Avoid taking oils. Seek medical attention. 6. Accident handling [Leakage] Quickly evacuate personnel in the leaked contaminated area to a safe area, immediately isolate them by 150m, and strictly restrict access. It is recommended that emergency responders wear self-contained positive pressure respirators and acid and alkali proof overalls. Do not come into direct contact with spilled material. Cut off the source of the leak as much as possible. small leak: Absorb it with sand, vermiculite or other inert materials, shovel it into an enamel bucket or a polyethylene plastic bucket and pour it into the alkaline solution in small batches one after another. After complete neutralization, the diluted sewage is discharged into the wastewater treatment system. In case of leakage on rainy days, mix sand and soda ash to absorb it. After confirming complete neutralization, shovel it into an enamel bucket or polyethylene plastic bucket, collect it and send it to the environmental protection department for harmless disposal. Clean contaminated floors with soap or detergent. massive leaks: Build dikes or dig pits for containment. Clear with expert guidance. [Fire] Firefighters must wear full-body acid and alkali-resistant fire-fighting suits and can use dry powder, carbon dioxide, and dry sand to extinguish fires. Water is prohibited.

Storage and transportation precautions: Store in high dry and clean warehouse. Keep away from fire and heat sources. The packaging must be sealed and protected from moisture. It should be stored separately from flammable and combustible materials, alkalis, oxidants, metal powders, etc. Mixed storage and transportation are not allowed. It should not be stored for a long time to avoid deterioration. When handling, load and unload with care to prevent damage to packaging and containers. Pay attention to personal protection during packaging and transportation operations. Transportation must follow prescribed routes and must not be stopped midway. It is not suitable to transport on rainy days. abandoned: according to * * Dispose in accordance with the requirements of relevant local regulations. Or contact the vendor or manufacturer to determine disposal methods. Packaging method: Wooden crates outside screw-top glass bottles, iron-top pressure-top glass bottles, plastic bottles or metal barrels (cans) ； Acid-resistant jar, wooden box or semi-lattice box outside ceramic jar ； Plastic bottles and glass bottles in wooden boxes or semi-lattice boxes. engineering controls: Close operation and pay attention to ventilation. Mechanize and automate as much as possible. respiratory protection: A gas mask or air-supplied helmet must be worn when there is a possibility of contact with its vapors or fumes. During emergency rescue or escape, it is recommended to wear self-contained breathing apparatus. eye protection: Wear chemical safety glasses. protective clothing: Wear work clothes (made of anti-corrosion materials). hand protection: Wear rubber gloves. other: After work, shower * * . Store poison-contaminated clothing separately and launder before use. maintain good hygiene * used.

Phosphorus trichloride in pesticide plants should be stored as raw materials. In addition to the above-mentioned personal protection, it is important to declare and supervise! 1. It is a highly toxic chemical and is supervised according to the domestic highly toxic chemicals management requirements (Public Security Bureau) 2. Whether the storage amount exceeds the critical amount of major hazard sources, if it exceeds, it will be supervised according to the requirements of major hazard sources! 3. Raw materials for chemical weapons (United Nations), public security management. 4. Hazardous chemicals: Category 9, banned water-based substances have different regulatory requirements across the country, among which Jiangsu is relatively strict!

Take an active part in it. Here is the content obtained from checking the information: Phosphorus oxychloride 1.127.1 Chinese name of the basic information database: Phosphorus oxychloride English name: phosphorus oxychloride alias: Phosphorus oxychloride ； Phosphoryl chloride ； Phosphorus oxychloride ； Phosphorus oxychloride CAS No.: 10025-87-3 Molecular formula: POCl3 molecular weight: 153.33 Danger signs: 20(acid corrosive) Packaging category: O52 Packaging method: The closed-mouth thick steel drum is made of welded steel plates with a thickness of 2 to 3 mm. The barrel body is covered with two rolling hoops. The threaded mouth, cap, gasket and other sealing parts are in good condition, and the net weight of each barrel does not exceed 300 kilograms. ； Glass bottles or plastic barrels (cans) with outer full-open steel drums ； Ordinary wooden box or semi-lattice wooden box outside glass bottles or plastic barrels (cans) ； Ordinary wooden box outside frosted mouth glass bottle or threaded mouth glass bottle ； The ampoules come in ordinary wooden boxes. 1.127.2 Main components of physical and chemical property library: Content: Industrial grade ≥99.0%. Appearance and properties: Colorless and transparent fuming liquid with spicy smell. Melting point(℃): 1.2 Boiling point (℃): 105.1 Relative density (water=1): 1.68 Relative vapor density (air=1): Vapor pressure (kPa): 5.33(27.3℃) flash point: Heat of combustion (kJ/mol): Solubility (S) of compounds in water: stability and reactivity: Stable hazardous properties: It decomposes violently when exposed to water, producing a large amount of heat and smoke, and may even explode. It is corrosive to many metals, especially in the presence of moist air. solubility: Incompatible materials: Strong reducing agent, active metal powder, water, alcohol. 1.127.3 Skin contact in emergency repository: Take off contaminated clothing immediately and rinse with plenty of running water for at least 15 minutes. Seek medical attention. eye contact: Immediately lift your eyelids and rinse thoroughly with plenty of running water or saline for at least 15 minutes. Seek medical attention. inhalation: Leave the scene quickly and get to fresh air. Keep your airway open. If breathing is difficult, give oxygen. If breathing stops, perform artificial respiration immediately. Seek medical attention. ingest: Rinse your mouth with water and perform gastric lavage if there are no symptoms of corrosion. Avoid taking oils. Seek medical attention. respiratory protection: When possible contact with its vapors, a self-priming filter respirator (full face mask) or isolation respirator must be worn. During emergency rescue or evacuation, it is recommended to wear air respirators. eye protection: Respiratory system protection has been implemented. body protection: Wear rubber acid and alkali resistant clothing. hand protection: Wear rubber acid and alkali resistant gloves. Other protection: Smoking, eating and drinking are prohibited at the work site. After work, take a shower * * . Store clothes contaminated with poisons separately and wash them for later use. maintain good hygiene * used. Accidental leakage measures: People in the leaked contaminated area were quickly evacuated to a safe area, immediately isolated 150m, and access was strictly restricted. It is recommended that emergency responders wear self-contained positive pressure respirators and acid and alkali proof overalls. Do not come into direct contact with spilled material. Cut off the source of the leak as much as possible. small leak: Absorb with sand, vermiculite or other inert material. massive leaks: Build dikes or dig pits for containment. Clear with expert guidance. Hazardous combustion products: Hydrogen chloride, phosphorus oxide, phosphine. Fire extinguishing methods: fire extinguishing agent: Dry powder, dry sand. Water is prohibited. 1.127.4 Management of management information base operations: Close operation and pay attention to ventilation. The operation should be as mechanized and automated as possible. Operators must undergo special training and strictly abide by operating procedures. It is recommended that operators wear self-priming filter gas masks (full face masks), rubber acid and alkali resistant clothing, and rubber acid and alkali resistant gloves. Avoid generating smoke. Prevent the release of fumes and vapors into the workplace air. Avoid contact with reducing agents, active metal powders, and alcohols. Be particularly careful to avoid contact with water. When handling, load and unload with care to prevent damage to packaging and containers. Equipped with leakage emergency treatment equipment. Empty containers may contain harmful residues. Storage management: Store in a cool, dry, well-ventilated warehouse. Keep away from fire and heat sources. The storage temperature does not exceed 25°C and the relative humidity does not exceed 75%. The packaging must be sealed and protected from moisture. It should be stored separately from reducing agents, active metal powders, alcohols, etc. and avoid mixed storage. The storage area should be equipped with emergency release equipment and suitable containment materials. transportation management: During railway transportation, the dangerous goods assembly table in the "Dangerous Goods Transport Rules" of the Ministry of Railways should be strictly followed. When shipping, the packaging should be complete and the loading should be secure. During transportation, make sure that the container does not leak, collapse, fall, or be damaged. It is strictly prohibited to mix and transport with reducing agents, active metal powders, alcohols, edible chemicals, etc. During transportation, the transport vehicle should be equipped with leakage emergency treatment equipment. During transportation, they should be protected from exposure to the sun, rain, and high temperatures. When transporting by road, follow the prescribed routes and do not stay in residential areas and densely populated areas. waste management: Please refer to the * * and local regulations. Pour into the sodium bicarbonate solution, spray it with ammonia water, and add crushed ice at the same time. After the reaction stops, flush it into the wastewater system with water. 1.127.5 Toxicology Database Acute Toxicity: LD50380mg/kg (rat oral) ； LC5032ppm, 4 hours (rat inhalation). This product is similar to phosgene. Mice and rats died in 4-6 minutes after inhalation of 1000 mg/m3, and in 36 minutes at 48 mg/m3. ； Death occurred in 4-5 hours at 5.7 mg/m3. The symptoms of poisoning in mice include restlessness, irritation of the upper respiratory tract and conjunctiva, inhibition, convulsions, unsteady gait, lying on one side, and finally death. In addition to the above-mentioned manifestations, rats also had tearing, corneal opacity and pulmonary edema. Acute poisoning can occur when humans are exposed to a concentration of 70 mg/m3. Symptoms generally appear again after an incubation period of 2 to 6 hours, with respiratory mucosa irritation and eye pain. Severe cases may include a sense of suffocation, cyanosis, pulmonary edema, and heart failure. Anemia, liver damage, and proteinuria may also occur. When the workshop temperature is high and the relative humidity is low, inhalation poisoning is prone to occur. Subacute and chronic toxicity: In a 60-day inhalation experiment in rats, at a concentration of 33.5 mg/m3, slow weight gain and skin ulcers occurred, and the survival rate of lung macrophages decreased. No functional or organic changes in liver and kidney were observed. Poisoning mechanism: irritating: This liquid may cause eye and skin burns. Eye burns heal slowly. Fire and explosion hazard: This product is non-flammable, highly corrosive and irritating, and can cause burns to the human body. 1.127.6 Main uses and contact opportunities of emergency medical libraries: Used in the production of pharmaceuticals, synthetic dyes and plastics. Invasion route: Inhaled, ingested. Human hazard: This product decomposes into phosphoric acid and hydrogen chloride when exposed to water vapor. It contains phosphorus and can cause phosphorus poisoning. It has irritating and corrosive effects on skin and mucous membranes. Toxicity is similar to phosgene. acute poisoning: Inhaling a large amount of vapor in a short period of time can cause upper respiratory tract irritation symptoms, pharyngitis, and bronchitis. ； In severe cases, laryngeal edema, suffocation, pneumonia, pulmonary edema, cyanosis, and heart failure may occur. Anemia, liver damage, and proteinuria may also occur. Oral administration causes gastrointestinal burns. Causes burns in contact with eyes and skin. Long-term low-concentration exposure can cause mouth, eye and respiratory tract irritation symptoms. Diagnostic points: (1) After an incubation period of 2-6 hours in the respiratory system, dry throat, sore throat, cough, chest tightness, shortness of breath, and difficulty breathing may occur. In severe cases, tracheitis, bronchitis, pneumonia, pulmonary edema, and even acute respiratory distress syndrome (ARDS) may occur. (2) Nausea, vomiting, abdominal pain, hepatomegaly and abnormal liver function may occur in the digestive system. (3) Eyes may have eye pain, tearing, eye edema, blepharospasm, conjunctival congestion, corneal opacity, etc. (4) The skin may be burned, and local erythema, blisters, etc. may appear. (5) Other headaches, dizziness, weakness, cyanosis, convulsions, unstable gait, and pelvic bleeding. In severe cases, kidney damage, heart failure, myocarditis, etc. may occur. There are also reports of more cases of tooth enamel loss and gum bleeding and swelling. Processing principles: (1) The main thing is to leave the scene, keep the respiratory tract open, and give oxygen. Early, sufficient, and short-term application of adrenal glucocorticoids to prevent and control pulmonary edema. Use high-dose antibiotics to control secondary infections. Provide antispasmodic, sedative, antitussive and other symptomatic treatments. (2) When the skin is contaminated, it should be absorbed with paper or cotton first, and then wet compressed with 2% sodium bicarbonate. Wound exposure therapy can also be used, but ointments or fat dressings should not be used. After the burned skin becomes scabbed, the scab should be cut and debrided or skin grafted sooner or later, which can prevent phosphorus absorption and avoid wound infection. (3) When the eyes are burned, rinse thoroughly (2% boric acid) and prevent infection (apply antibiotic eye ointment or eye drops) as soon as possible. Subconjunctival autohemostatic injection therapy, pupil dilation, antibiotic irrigation, etc. can also be used. (4) Pay attention to protecting the functions of important organs. We in Haichuan also have related discussions http://bbs.hcbbs.com/viewthread.php?tid=334561

Cement works well for phosphorus trichloride leaks and can quickly cover the smoke.