Safety precautions for operation, storage and transportation of hydrofluoric acid

Handling precautions: Closed operation, pay attention to ventilation. The operation is as mechanized and automated as possible. Operators must be specially trained to strictly follow the operating procedures. It is recommended that the operator wear a self-priming filter gas mask (full face mask), wear rubber acid and alkali resistant clothing, and wear rubber acid and alkali resistant gloves. Prevent vapors from leaking into the workplace air. Avoid contact with alkalis, active metal powders, and glass products. Lightly load and unload during handling to prevent damage to packaging and containers. Equipped with leakage emergency treatment equipment. Empty containers may be harmful residues.

Storage Precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat. The temperature of the reservoir does not exceed 30 ° C, and the relative humidity does not exceed 85%. Keep the container sealed. It should be stored separately from alkali, active metal powder and glass products, and should not be mixed. The storage area should be equipped with leakage emergency treatment equipment and suitable containment materials.

Monitoring method: ion selective electrode method; fluorine reagent-antimony salt colorimetry

Disposal method: use excess lime to neutralize, precipitate the precipitate for landfill treatment or recycle, and the supernatant is diluted and discharged into the wastewater system.

Packing method: Put it into lead drum or special plastic container and put it in wooden box. The gaps are filled with non-combustible materials; filled into plastic bottles, special bakelite, rubber or lead containers, sealed and placed in a sturdy wooden box. The wooden box is filled with non-combustible materials, the net weight of each box is not more than 20 kg, and the packaging of 3 to 5 kg is limited to 4 bottles per box.

Transport Considerations: The MSDS provides a brief description of the hazards of a chemical to human health and the environment and provides information on how to safely handle, store and use the chemical. As a service provided to users, manufacturers should provide safety instructions to users along with chemical products, so that users can understand the hazards of chemicals, and actively protect them during use, thereby reducing occupational hazards and preventing chemical accidents. MSDS It can be prepared by the manufacturer in accordance with the relevant rules. The MSDS evaluation and certification report is prepared in accordance with the legal requirements and requirements of the importing country of the product. At present, the law on the preparation of chemical assessments stipulates that there is no uniform standard in the world. The generally international version is the EEC/ISO version of the European Union and the OSHA and ANSI versions of the United States. Since the legal documents for chemical management and trade vary from country to country and even from state to state, some change every month. If the MSDS report is incorrect or the information is incomplete, it will face legal responsibility. Therefore, foreign customers generally require their material suppliers to provide MSDS material safety assessment certification reports issued by professional third-party testing organizations to prevent MSDS reports prepared by material suppliers from complying with the relevant national laws. Or the material safety data provided by the MSDS report is inconsistent with the safety accidents and legal liabilities.

Railway transportation should be carried out in strict accordance with the dangerous goods fitting table in the Dangerous Goods Transportation Regulations of the Ministry of Railways. 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. It is strictly forbidden to mix and transport with alkali, active metal powder, glass products, food chemicals, etc. Transport vehicles should be equipped with leakage emergency handling equipment when transporting. During transportation, it should be protected from exposure, rain and high temperature. When transporting by road, follow the prescribed route and do not stay in residential areas and densely populated areas.