| Substance name: acetic acid chemicalsCommon name: acetic acid English name: | |||||||||||||||||
| Hazard Category: Class 8.3 Corrosives | Dangerous Goods Code: 81601 | UN number：2789 | |||||||||||||||
| Physicochemical properties | |||||||||||||||||
| Melting point (°C) | 16.7 | Boiling point (°C) | 118.1 | Solubility | Soluble in water, ether, glycerin, insoluble in carbon disulfide. | ||||||||||||
| Relative density (air = 1) | 1.05 | Saturated vapor pressure | 1.52(20℃) | Heat of combustion | 873.7 kJ/mol | ||||||||||||
| Relative density (water = 1) | 2.07 | Appearance and smell | A colorless, transparent liquid with a pungent sour odor. | ||||||||||||||
| Fire and explosion hazard data | |||||||||||||||||
| Flash point (°C) | 39 | Explosion limit (%) | Upper limit 17.0 lower limit 4.0 | Fire hazard category | Class B | ||||||||||||
| Critical temperature (°C) | 321.6 | Critical pressure (MPa) | 5.78 | Flammability | combustible | ||||||||||||
| Minimum ignition energy (mj) | No data | Explosion hazard level, group | ⅡAT1 | ||||||||||||||
| Extinguishing agent | Mist water, foam, carbon dioxide, dry powder | ||||||||||||||||
| Fire fighting methods | Spray the spilled liquid with water to dilute it into a non-combustible mixture and protect the firefighters with misty water | ||||||||||||||||
| Dangerous characteristics | It is flammable, and its vapor and air can form an explosive mixture. In case of fire, high heat, it will cause fire and explosion. Exposure to chromic acid, sodium peroxide, nitric acid or other oxidizing agents poses a risk of explosion. Corrosive. | ||||||||||||||||
| Reactive data | |||||||||||||||||
| Stability: no data | Polymerization risk: no data | Incompatibility: alkalis, strong oxidants。 | Combustion (decomposition) products: carbon monoxide, carbon dioxide. | ||||||||||||||
| Health hazard data | |||||||||||||||||
| Route of invasion | Inhalation, ingestion, percutaneous absorption | ||||||||||||||||
| Acute toxicity | LD50 | 3530 mg/kg(Rat oral)；1060 mg/kg(Rabbit percutaneous) | LC50 | 13791mg/m3，1hour(Mouse inhalation) | |||||||||||||
| Health hazardInhalation of this product vapor is irritating to the nose, throat and respiratory tract. It has a strong stimulating effect on the eyes. Skin contact, erythema appears in light, and chemical burns in severe cases. Inadvertently taking concentrated acetic acid, the mouth and digestive tract can produce erosion, and the severe one can be killed by shock. Chronic effects: eyelid edema, conjunctival congestion, chronic pharyngitis and bronchitis. Repeated contact for a long time can cause dry skin, skim and dermatitis. | |||||||||||||||||
| Leakage emergency treatmentQuickly evacuate personnel from the contaminated area to a safe area, and conduct isolation to strictly restrict access. Cut off the fire source. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and wear acid and alkali protective overalls. Do not touch the spill directly. Cut off the source of the leak as much as possible. Prevent entry into restricted spaces such as sewers and flood drains. Small spill: Mix with sand, dry lime or soda ash. A large number of leaks: building a dike or digging a pit. Spray water cools and dilutes the steam, protects the site personnel, and dilutes the spill into incombustibles. Transfer to a tank truck or special collector with an explosion-proof pump, recycle or transport to a waste disposal site for disposal. | |||||||||||||||||
| Storage and transportation precautions: Store in a cool, ventilated warehouse. The storage temperature should be kept above 16 °C during the freezing season to prevent solidification. Keep the container sealed. It should be stored separately from oxidants and alkalis, and should not be mixed. It is forbidden to use mechanical equipment and tools that are prone to sparks. The storage area should be equipped with leakage emergency treatment equipment and suitable containment materials. The packaging should be complete at the time of shipment and the loading should be secure. During transportation, ensure that the container does not leak, does not collapse, does not fall, and is not damaged. The tank (tank) used in transportation should have a grounding chain, and a hole partition can be arranged in the tank to reduce the static electricity generated by the shock. It is strictly forbidden to mix and transport with oxidants, alkalis, food chemicals, etc. | |||||||||||||||||
| Packing category: O53Packing method: small open aluminum barrel; glass box or plastic barrel (can) outside ordinary wooden box or half-frame wooden box; frosted glass bottle or threaded glass outside the ordinary wooden box; threaded glass bottle, plastic bottle or metal Ordinary wooden box outside the barrel (can); threaded glass bottle, fiberboard box or plywood box. | |||||||||||||||||
| Disposal: Dispose of by incineration. | |||||||||||||||||
| first-aid | |||||||||||||||||
| skin contact | Immediately remove contaminated clothing and rinse with plenty of running water for at least 15 minutes. Seek medical attention. | ||||||||||||||||
| eye contact | Immediately lift the eyelids and rinse thoroughly with plenty of running water or saline for at least 15 minutes. Seek medical attention. | ||||||||||||||||
| Inhalation | Quickly leave the scene to the fresh air. Keep the airway open. If breathing is difficult, give oxygen. Seek medical attention. | ||||||||||||||||
| Ingestion | Rinse mouth with water and seek medical attention. | ||||||||||||||||
| Protective measures | |||||||||||||||||
| Occupation exposure limit | PC-TWA：20 mg/m3；PC-STEL：30 mg/m3 | ||||||||||||||||
| Project control | The production process is closed and ventilation is enhanced. Safety showers and eyewash equipment are provided. | ||||||||||||||||
| Respiratory protection | When the concentration in the air exceeds the standard, a self-priming filter gas mask (half mask) should be worn. Wear an air breathing apparatus for emergency rescue or evacuation. | ||||||||||||||||
| Body protection | Wear acid and alkali plastic overalls. | Hand protection | Wear rubber acid and alkali resistant gloves | Eye protection | Wearing chemical safety glasses | ||||||||||||
| other | Smoking is strictly prohibited at the job site. After work, take a shower. Pay attention to personal hygiene. | ||||||||||||||||