Zhishang Chemical

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Zhishang Chemical

Fluorene CAS 86-73-7

Molecular Formula: C13H10

Formula Weight: 166.22

ZSpharmac: Fluorene Supplement

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Product Name: Fluorene
CAS No: 86-73-7
Purity: 99%

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Basic Info

Product Name:Fluorene
Other Names:Poly Fluorene
CAS:86-73-7
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Cosmetic Raw Materials
Appearance:White Flaky Crystals
EINECS No.:201-695-5
Storage:Room Temp
Provide:Fluorene MSDS;
Fluorene COA

What is Fluorene?

Fluorene is a polycyclic aromatic hydrocarbon with the molecular formula C13H10. White flaky crystals, fluorescent when unclean, with characteristic aromatic smell comparable to naphthalene. Exist in car exhaust, corn silk and also high-boiling parts of coal tar. Combustible. Insoluble in water, soluble in benzene, carbon disulfide, ethanol and ether.

Fluorene Property

Melting point 111-114 °C (lit.)
Boiling point 298 °C (lit.)
density 1.2
vapor pressure 13 hPa (146 °C)
refractive index 1.6470
Fp 151 °C
storage temp. room temp
solubility 0.002g/l insoluble
form Crystalline Powder
pka>15 (Christensen et al., 1975)
color Almost white to light brown
Water Solubility insoluble

 

Fluorene Uses

  1. Fluorene is used as a raw material for organic synthesis. Can be made right into trinitrofluorenone for electrostatic copying; synthetic aryl transparent nylon; can change anthraquinone to manufacture indanthrene dye; made use of in the manufacture of antispasmodics, sedatives, anesthetics, hypotensives; artificial Insecticides, herbicides; prep work of impact-resistant plexiglass and also fluorene aldehyde resins; likewise utilized as wetting agents, cleaning agents, fluid flashes, anti-bacterials, and so on.
  2. Fluorene is utilized to make medications and dyes; to synthesize chemicals and herbicides; to make impact-resistant plexiglass and also fluorene aldehyde resin 。
  3. Fluorene is made use of to make medications, dyes as well as aromatic polyamides.

Fluorene Application

Fluorene can be obtained by industrial synthesis and is used as a precursor for indanthrene dyes, plastics and pesticides. From it, chemicals such as 9-fluorenone, 9-fluorenemethanol and trinitrofluorenone (for xerography) can be synthesized. Polyfluorenes can be used as light emitters in organic light emitting diodes.

The 9-position proton of fluorene is acidic with a pKa of 22.6 (DMSO), which can be removed by a base (such as sodium hydroxide) to form an orange-yellow aromatic anion. This anion can act as a nucleophile and undergo a substitution reaction with an electrophile at the 9-position.

The fluorene derivative, 9-fluorenyl methyl chloroformate (Fmoc-Cl), is used to protect amino groups with fluorene methoxycarbonyl in peptide synthesis.

Environmental Fate of Fluorene

Fluorene is a member of a team of chemicals called polycyclic aromatic hydrocarbons (PAHs). Fluorene exists in nonrenewable fuel sources. Since it is a common item of incomplete burning, its launch to the setup dominates. It is released into the environment with the burning of oil, gas, coal, timber in addition to waste. The manufacturing and also use of fluorene in the manufacture of product things and dyes may also create its launch right into the atmosphere in various waste streams. If launched right into air, the vapor stress at 25 ° C is 6.0X10-4 mm Hg, recommending that fluorene will definitely exist in both the vapor and likewise fragment phases in the atmosphere. Gas-phase fluorene is degraded in the environment by feedback with photochemically created hydroxyl radicals; the half-life of this action in air is approximated to be 1.2 days. The bit stage fluorene will definitely be removed from the ambience by wet as well as also completely dry deposition. Fluorene takes in UV light at wavelengths > 290 nm as well as also may for that reason go to threat to direct photolysis by sunlight. Nevertheless, the fragment stage fluorene is steady to photooxidation, which would definitely allow its long-range transport on a global array. If released right into dirt, fluorene is not prepared for to move based upon a log Koc selection of 3.70 to 4.21. According to the Henry’s Legislation constant of 9.62X10-5 atm-cu m/mole, volatilization from damp dirt surface areas is anticipated to be a crucial destiny process. However, adsorption to dirt is prepared for to attenuate volatilization. Based upon its vapor stress, fluorene does not volatilize from dry dirt surface areas. Over 92% of the first fluorene was biodegraded making use of creosote infected dirt. No biodegradation occurred utilizing immaculate dust, advising that biodegradation is an essential eco-friendly destiny treatment in tamed dusts. If launched to water, fluorene is prepared for to adsorb right into Koc-based postponed solids in addition to particles. Making use of the river termination examination, little or no degradation of fluorene to carbon dioxide happened during the 24-hour incubation period, suggesting that biodegradation is not a vital ecological destiny process in water. According to the Henry’s policy constant for this compound, volatilization from the water surface area is expected to be a necessary destiny process. The estimated volatilization half-lives for the model river as well as variation lake are 15 hrs as well as 9 days, respectively. However, unpredictable columns at the water surface area are anticipated to be endangered by adsorption to put on hold solids and additionally debris in the water. If adsorption is thought of, the estimated volatilization half-life for the style fish pond is 190 days. The measured log BCF values of 3.02-3.35 suggest extremely high bioconcentrations in aquatic bacteria, supplied that the substance is not metabolized by the microorganisms. Hydrolysis is not anticipated to be an essential environmental fate procedure, as this substance does not have functional groups to hydrolyze at ambient troubles (pH 5 to 9). Job-related direct exposure to fluorene might happen using breathing and additionally facial direct exposure to the substance in work environments where fluorene is unintentionally produced or taken advantage of. Monitoring information suggest that the basic populace may be exposed to fluorene using breathing of ambient air, intake of food and also alcohol consumption water, as well as cigarette smoking.

Degradation of Fluorene and Fluoranthene by Basidiomycetes

The dependence of the deterioration level of fluorene and fluoranthene on the medium structure by Oyster mushroom D1 fungi was examined. Utilizing fluoranthene as well as fluorene as substratums, polycyclic aromatic hydrocarbons (PAHs) are converted in Kirk’s medium (under laccase production problems) to create quinone metabolites as well as 9-fluorenone, respectively. In basidiomycete-enriched media (in the visibility of laccase and also multifunctional peroxidase production) much more total degradation happened, developing the intermediate metabolite phthalic acid, which was consequently made use of. For the first time, the formation of phthalic acid, a metabolite of fluoranthene destruction by ligneous rotting fungis, is disclosed. The information permit the hypothesis that both extracellular laccases and mycelial surface area laccases can be involved in the first stages of PAH metabolic rate, whereas multifunctional peroxidases are needed for the oxidation of the developed metabolites. The fluorene metabolism plan of oyster mushroom D1 was proposed.

Synthetic Method and Production Method of Fluorene

Production Method:

Fluorene in high temperature tar contains about 1.0-2.0%. The fluorene fraction at 290-310°C is cut from the oil-washed fraction, and a distillation column equivalent to 115 theoretical trays is used for precise fractionation. The reflux ratio is 15:1, and the narrow fraction at 292-302°C is cut. Through cooling, crystallization and centrifugal separation, crude fluorene is obtained, and then recrystallized with 1:25 benzene or xylene to obtain industrial fluorene. Dissolve industrial fluorene in benzene, wash with 40% sulfuric acid, neutralize and wash with water, remove the solvent, re-distill the fluorene, and recrystallize the distillate with gasoline and ethanol to obtain pure fluorene with a purity of 95%.

Synthetic Method:

1. Fluorene in high temperature tar contains about 1.0-2.0%. The fluorene fraction at 290-310°C is cut from the oil-washed fraction, and a distillation column equivalent to 115 theoretical trays is used for precise fractionation. The reflux ratio is 15:1, and the narrow fraction at 292-302°C is cut. Through cooling, crystallization and centrifugal separation, crude fluorene is obtained, and then recrystallized with 1:25 benzene or xylene to obtain industrial fluorene. Dissolve industrial fluorene in benzene, wash with 40% sulfuric acid, neutralize and wash with water, remove the solvent, re-distill the fluorene, and recrystallize the distillate with gasoline and ethanol to obtain pure fluorene with a purity of 95%.

2. Under the catalysis of ferric chloride, biphenyl is prepared by reacting with dichloromethane.

Company Profile and Corporate Culture

Company Profile:

ZhiShang Chemical is owned by ZhiShang Group is a professional new-type chemicals enterprise combined into research and development, production and sales .

The company’s competitive product is pharmaceutical raw materials and intermediates (especially carbohydrate derivatives Series), In recent years, the company has made a major breakthrough in food and feed additives, plant extraction, industrial chemicals industry .

The company insists on the spirit of “sincere management, strict quality control, customer as god” , get consistent high praise from customers at home and abroad.

Corporate Culture:

OUR MISSION
Help China Chemicals to benefit the happiness of human life
OUR VISSION
Become the most trusted chemical supplier in the world
OUR BUSINESS PHILOSOPHY
Striver – oriented, enrich employees, customer first, deep service, seek development
OUR VALUES
Be prepared for danger in times of peace, forge ahead actively, unity and cooperation, and be brave to fight

About Us

The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.

“Zhishang” products are exported to Europe, North and South America, the Middle East, Asia Pacific and Africa area, so as to establish a long-term and stable cooperation relationship with customer in the world.

Company Info
  • Business Type: Manufacturer
  • Product Range: Additive , Chemical Auxiliary & Catalyst , Organic Chemicals
  • Products/Service: Organic Intermediate,Inorganic Chemistry, APIs, Dyestuffs And Pigments, Fragrance And Spices, Food Additives
  • Total Employees: 51~100
  • Capital (Million US $): 10000000RMB
  • Year Established: 2016
Production Capacity
  • No. of Production Lines : 8
  • No. of QC Staff : 5 -10 People
  • OEM Services Provided : yes
  • Factory Size (Sq.meters) : 3,000-5,000 square meters
  • Certificate: ISO9001 , CE , GMP , API , MSDS
  • Factory Location : Diao Town Industry Park, Zhangqiu City, Jinan City, Shandong Province, China.

Service

Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.

 

After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.

FAQ

Do you accept sample order?

We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.

 

HOW TO CONFIRM THE PRODUCT QUALITY BEFORE PLACING ORDERS?

You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.

What’s your MOQ?

Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.

Shipping

1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.

Get Fluorene Quotation