ChemicalBook
Chinese Japanese Germany Korea

Diphenylmethane

Definition Application Synthesis
Diphenylmethane
Diphenylmethane structure
CAS No.
101-81-5
Chemical Name:
Diphenylmethane
Synonyms
Ditan;DITANE;ai3-00748;ai3-28021-x;BENZYLPHENYL;Benaylbenzene;BENZYLBENZENE;-Phenyltoluene;diphenyl-methan;1-Benzylbenzene
CBNumber:
CB3852608
Molecular Formula:
C13H12
Formula Weight:
168.23
MOL File:
101-81-5.mol

Diphenylmethane Properties

Melting point:
24.5 °C
Boiling point:
265 °C
Density 
1.006 g/mL at 25 °C(lit.)
vapor density 
5.79 (vs air)
vapor pressure 
<1 mm Hg ( 77 °C)
refractive index 
n20/D 1.577(lit.)
Flash point:
>230 °F
storage temp. 
Store below +30°C.
solubility 
Soluble in ethanol, ether, benzene and chloroform.
pka
33.5(at 25℃)
form 
Low Melting Solid
color 
Colorless to pale yellow
Specific Gravity
1.006
explosive limit
0.69-8.66%(V)
Water Solubility 
14.1mg/L(25 ºC)
Merck 
14,3328
BRN 
1904982
CAS DataBase Reference
101-81-5(CAS DataBase Reference)
FDA UNII
K3E387I0BC
NIST Chemistry Reference
Diphenylmethane(101-81-5)
EPA Substance Registry System
Diphenylmethane (101-81-5)
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS09
Signal word  Warning
Hazard statements  H411-H303-H400-H410
Precautionary statements  P273-P391-P501
Hazard Codes  Xn
Risk Statements  22
Safety Statements  24/25-58-54-44-29
RIDADR  UN3077
WGK Germany  2
RTECS  DA4976500
Autoignition Temperature 905 °F
TSCA  Yes
HazardClass  9
PackingGroup  III
HS Code  29029090
Toxicity LD50 orally in Rabbit: 2250 mg/kg LD50 dermal Rabbit > 5000 mg/kg
NFPA 704
1
1 0

Diphenylmethane price More Price(10)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich D209317 Diphenylmethane 99% 101-81-5 25g $29.7 2019-12-02 Buy
Sigma-Aldrich D209317 Diphenylmethane 99% 101-81-5 1kg $89.7 2019-12-02 Buy
TCI Chemical D0896 Diphenylmethane >99.0%(GC) 101-81-5 25g $15 2019-12-02 Buy
TCI Chemical D0896 Diphenylmethane >99.0%(GC) 101-81-5 500g $39 2019-12-02 Buy
Alfa Aesar B21256 Diphenylmethane, 99+% 101-81-5 500g $44.8 2019-12-02 Buy

Diphenylmethane Chemical Properties,Uses,Production

Definition

Diphenylmethane is an organic compound with the formula (C6H5)2CH2 (often abbreviated CH2Ph2). The compound consists of methane wherein two hydrogen atoms are replaced by two phenyl groups. Diphenylmethane is a common skeleton in organic chemistry. The diphenylmethyl group is also known as benzhydryl, and it is prepared by the Friedel–Crafts alkylation of benzyl chloride with benzene in the presence of a Lewis acid such as aluminium chloride.

Application

The main application of diphenylmethane includes widely used in the synthesis of luminogens for aggregation-induced emission (AIE) and used in the preparation of a polymerization initiator, diphenylmethyl potassium (DPMK). It is one of the precursors in the synthesis of a dendrimeric polycyclic aromatic hydrocarbon (PAH), hexakis [4-(1,1,2-triphenyl-ethenyl) phenyl] benzene.

Synthesis

The classical synthesis of Diphenylmethane (DPMK) is the indirect metallation via potassium naphthenide. n-Butyllithium (n-BuLi) solution (1.6 M in hexanes) and sec-butyllithium (sec-BuLi) solution (1.4 M in cyclohexane) were diluted and ampoulized on a high vacuum line. Lithium chloride (99.999%, LiCl,) was dried at 130 °C for 2 days and then diluted to the target concentration in THF and ampoulized under a reduced pressure of 10-6 mm Hg. Sodium (NaNaph) and potassium naphthalenide (K-Naph) were prepared by the reaction of the corresponding metal with naphthalene in THF at room temperature for 48 h. Diphenyl methyl potassium (DPMK) was prepared by the reaction of K-Naph with diphenylmethane in THF under high vacuum conditions at room temperature for 72 h. The concentration of DPMK was determined by titration using octyl alcohol and used for anionic polymerization. All initiators were sealed off under high vacuum into ampoules with break seals and stored at -30 °C.

Chemical Properties

Colorless to pale yellow low melting solid

Definition

ChEBI: A diarylmethane that is methane substituted by two phenyl groups.

Purification Methods

Sublime it under vacuum, or distil it at 72-75o/0.4mm. Recrystallise it from cold EtOH. It has also been purified by fractional crystallisation from the melt. [Armarego Aust J Chem 13 95 1960, Beilstein 5 II 498, 5 IV 1841.]

Diphenylmethane Preparation Products And Raw materials

Raw materials

Preparation Products


Diphenylmethane Suppliers

Global( 224)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 22631 55
Shanghai Zheyan Biotech Co., Ltd.
18017610038
zheyansh@163.com CHINA 3623 58
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 30053 58
SHANDONG ZHI SHANG CHEMICAL CO.LTD
+86 18953170293
+86 0531-67809011 sales@sdzschem.com CHINA 2995 58
Chemwill Asia Co.,Ltd.
86-21-51086038
86-21-51861608 chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 23978 58
Haihang Industry Co.,Ltd
86-531-88032799
+86 531 8582 1093 export@haihangchem.com CHINA 8734 58
Xiamen AmoyChem Co., Ltd
+86 592-605 1114
sales@amoychem.com CHINA 6372 58
Hubei xin bonus chemical co. LTD
86-13657291602
027-59338440 sales@guangaobio.com CHINA 23048 58
Chongqing Chemdad Co., Ltd
+86-13650506873
sales@chemdad.com CHINA 35438 58
CONIER CHEM AND PHARMA LIMITED
86-18523575427
sales@conier.com CHINA 47484 58

Related articles


View Lastest Price from Diphenylmethane manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2020-01-17 Diphenylmethane
101-81-5
US $0.00-0.00 / 公斤 100G 99.0%+ 100 tons Shaanxi Dideu Medichem Co. Ltd
2019-07-11 Diphenylmethane
101-81-5
US $1.00 / KG 1KG 99% 25kg career henan chemical co

Diphenylmethane Spectrum


101-81-5(Diphenylmethane)Related Search:


Copyright 2017 © ChemicalBook. All rights reserved