159-66-0

Appearance：white crystal

Density：1.28 g/cm3

Boiling Point：474.9ºC at 760 mmHg

Melting Point：202ºC

Flash Point：236.8ºC

Refractive Index：1.757

Vapor Pressure：9.93E-09mmHg at 25°C

9,9'-Spirobi[9H-fluorene] is a synthetic, aromatic hydrocarbon that is commonly used in the chemical industry. It is a white, crystalline solid with a melting point of 113°C and a boiling point of 259°C. It is insoluble in water and soluble in organic solvents such as ethanol, ether, and benzene.

9,9'-Spirobi[9H-fluorene] is used in the production of dyes, optical brighteners, and other specialty chemicals. It is also used to make polymers and resins for use in paints, coatings, and adhesives.

9,9'-Spirobi[9H-fluorene] has a high level of thermal stability, making it a suitable choice for high-temperature applications. It is also resistant to oxidation, making it a good choice for use in fuels and lubricants.

9,9'-Spirobi[9H-fluorene] has low toxicity and is generally regarded as safe for use in the chemical industry. It is approved for use in the European Union and the United States, and is classified as a non-volatile organic compound.

9,9'-Spirobi[9H-fluorene] is a versatile chemical that can be used in a wide range of applications. It can be used to make dyes and optical brighteners, as well as to produce polymers and resins for paints, coatings, and adhesives. It can also be used to manufacture fuels and lubricants due to its high thermal stability and resistance to oxidation. Its low toxicity makes it safe for use in chemical production.