Use of 9-Fluorenone

Introduction

9-Fluorenone is an important chemical substance whose molecular formula is C₁₃H₈O[1]. The English name of 9-fluorenone is fluoren-9-one. The CAS number is 486-25-9. The appearance and properties of 9-fluorenone are yellow crystalline powder. The melting point of 9-fluorenone is 80-83 °C and the boiling point is 342 °C. 9-Fluorenone is a raw material for the preparation of various fine chemicals, mainly used in functional macromolecules.

Picture 1 The physical map of 9-Fluorenone

9-Fluorenone, flammable, insoluble in water, soluble in some organic solvents such as ethanol and ether. 9-Fluorenone is an important organic synthesis intermediate, which can be used in fine chemicals (such as bisphenol fluorene), resins (such as fluorenylbenzoxazine resin, polycarbonate, acrylic resin), medicine, pesticides, dyes and other products manufacturing field. With the deepening of application research, 9-fluorenone also has broad market prospects in LED, solar cells and other fields.

First aid measures for 9-fluorenone

Move patient to fresh air if 9-fluorenone is inhaled. If skin comes in contact with 9-fluorenone, remove contaminated clothing and rinse skin thoroughly with soap and water[2]. If you feel unwell, seek medical attention. If you accidentally come into contact with 9-fluorenone, separate your eyelids and rinse with running water or normal saline. Get medical attention immediately. If 9-fluorenone is ingested, the person who ingested it should rinse the mouth and get medical attention immediately. Advice for Protecting Rescuers: Move the patient to a safe location. Consult a doctor.

Fire-fighting measures of 9-fluorenone

If 9-fluorenone burns, use dry powder, foam or carbon dioxide fire extinguishing agent immediately. The precautions and protective measures are as follows: Firefighters must wear air-carrying respirators and full-body fire-fighting suits to put out the fire in the upwind direction. Move the container from the fire area to an open area as much as possible. Containers in fire must be evacuated immediately if they have discolored or emit sound from safety pressure relief devices. Isolate the accident scene and prohibit unrelated persons from entering. Contain and treat fire water to prevent environmental pollution.

Emergency Remedy for 9-Fluorenone Spills

Worker precautions, protective equipment and emergency procedures. It is recommended that emergency responders wear air-carrying respirators, anti-static clothing, and rubber oil-resistant gloves. Do not touch or step over spillage. All equipment used during work should be grounded. Cut off sources of leaks as much as possible. Eliminate all ignition sources. The warning area is delineated according to the influence area of liquid flow, vapor or dust diffusion, and unrelated personnel are evacuated to the safe area from the crosswind and upwind directions. Environmental protection measures: contain spills and avoid polluting the environment. Prevent spills from entering sewers, surface water and groundwater. Methods of containment and clean-up of spilled chemicals and disposal materials used: Small spills: Collect spilled liquids in airtight containers as much as possible. Absorb with sand, activated carbon or other inert material and transfer to a safe place. Do not flush into sewers. Large spills: Construct dikes or dig pits for containment. Close the drain. Cover with foam to inhibit evaporation. Transfer it to a tanker or a special collector with an explosion-proof pump, and recycle it or transport it to a waste disposal site for disposal.

9-Fluorenone handling precautions

First of all, the operator should undergo special training and strictly abide by the operating procedures. Secondly, the operation and disposal should be carried out in a place with local ventilation or comprehensive ventilation facilities. During operation, avoid eye and skin contact and avoid breathing vapor. It is necessary to ensure that 9-fluorenone is kept away from fire and heat sources, and smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. If canning is required, the flow rate should be controlled, and there should be a grounding device to prevent the accumulation of static electricity. Avoid contact with incompatible substances such as oxidants. When handling, it should be lightly loaded and unloaded to prevent damage to packaging and containers. Empty containers may be harmful residues. Wash hands after use and prohibit eating or drinking in the workplace. Equipped with the corresponding variety and quantity of fire fighting equipment and leakage emergency treatment equipment.

Reference

1 People's Education Press. High School Chemistry (Elective 5). Beijing: People's Education Press, 2007

2. Chemical Registration Center of the State Administration of Work Safety. Complete Book of Safety Technology for Hazardous Chemicals (Third Edition): Chemical Industry Press, 2017