ChemicalBook > CAS DataBase List > 4-Methylbenzophenone

4-Methylbenzophenone

Product Name
4-Methylbenzophenone
CAS No.
134-84-9
Chemical Name
4-Methylbenzophenone
Synonyms
phenyl(p-tolyl)methanone;Methanone, (4-methylphenyl)phenyl-;4-methybenzophenone;APi-MBP;NSC 4898;YF-PI MBP;usafdo-54;USAF DO-54;IHT-PI MBP;HRcure-MBZ
CBNumber
CB4261278
Molecular Formula
C14H12O
Formula Weight
196.24
MOL File
134-84-9.mol
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4-Methylbenzophenone Property

Melting point:
56.5-57 °C (lit.)
Boiling point:
326 °C (lit.)
Density 
0.9926
vapor pressure 
0.059Pa at 25℃
refractive index 
1.5920 (estimate)
Flash point:
143 °C
storage temp. 
Sealed in dry,Room Temperature
solubility 
Chloroform (Slightly), Methanol (Slightly)
form 
Crystalline Powder or Crystals
color 
White to beige
Odor
faint odor
Water Solubility 
Insoluble in water.
Merck 
14,7317
BRN 
1909310
InChIKey
WXPWZZHELZEVPO-UHFFFAOYSA-N
LogP
3.69 at 25℃
CAS DataBase Reference
134-84-9(CAS DataBase Reference)
NIST Chemistry Reference
Methanone, (4-methylphenyl)phenyl-(134-84-9)
EPA Substance Registry System
4-Methylbenzophenone (134-84-9)
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Safety

Hazard Codes 
Xi
Risk Statements 
22-36/38-36/37/38
Safety Statements 
24/25-36-26
WGK Germany 
3
RTECS 
DJ1750000
Hazard Note 
Harmful/Irritant
TSCA 
Yes
HS Code 
29143990
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
M29959
Product name
4-Methylbenzophenone
Purity
99%
Packaging
10g
Price
$45.5
Updated
2024/03/01
Sigma-Aldrich
Product number
00373
Product name
4-Methylbenzophenone
Purity
analytical standard
Packaging
100mg
Price
$95.9
Updated
2022/05/15
TCI Chemical
Product number
M1248
Product name
4-Methylbenzophenone
Purity
>95.0%(GC)
Packaging
25g
Price
$28
Updated
2024/03/01
TCI Chemical
Product number
M1248
Product name
4-Methylbenzophenone
Purity
>95.0%(GC)
Packaging
250g
Price
$165
Updated
2024/03/01
Alfa Aesar
Product number
A15479
Product name
4-Methylbenzophenone, 98%
Packaging
50g
Price
$71.5
Updated
2024/03/01
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4-Methylbenzophenone Chemical Properties,Usage,Production

Chemical Properties

white to beige crystalline powder or crystals

Uses

4-Methylbenzophenone is used as clear coatings for wood, plastic and metal, overprint varnish.

Uses

4-Methylbenzophenone may be used as a reference standard for the determination of the analyte in breakfast cereals, paperboard food packaging and packed milk by various chromatography techniques.

Uses

Benzophenone estrogenicity toxicity structure activity.

Synthesis Reference(s)

Journal of the American Chemical Society, 82, p. 1223, 1960 DOI: 10.1021/ja01490a047
Tetrahedron Letters, 40, p. 3109, 1999 DOI: 10.1016/S0040-4039(99)00476-1
Synthesis, p. 776, 1977 DOI: 10.1055/s-1977-24573

General Description

4-Methylbenzophenone is a photo-initiator for printing inks, mainly applied to the cardboard boxes used for packing. It is reported to be a non-genotoxic carcinogen. However, it can contaminate foodstuffs when it comes in contact with the package contents.

Flammability and Explosibility

Not classified

Safety Profile

Poison by intraperitoneal route. A flammable liquid. When heated to decomposition it emits acrid smoke and irritating fumes.

Purification Methods

Crystallise the ketone from MeOH, Et2O (m 58-59o) or pet ether. The cis-oxime has m 154o(153-156o) (from EtOH), and the trans-oxime has m 114-116o (from pet ether). [Beilstein 7 H 440, 7 III 2127, 7 IV 1403.]

Structure and conformation

4-Methylbenzophenone was one of the first organic compounds for which polymorphism was observed. It crystallizes in two modifications, the stable monoclinic α-form (mp 59°C) and a metastable trigonal β-form (mp 55 ℃). The metastable β-form is rather stable and almost indefinitely preserved if not subjected to severe mechanical load or brought into contact with the stable form. If it converts into a stable form, the crystal becomes milky white and non-transparent due to micro-cracking. There are no conditions under which the β-form is more stable than the α-form. 4-Methylbenzophenone crystallizes in a monoclinic stable form (mp 59 ℃) with a = 5.70 Å, b = 13.89 Å, c = 14.08 Å, p = 95.18° and space group P21/c, and a trigonal metastable form (mp 55°C) with a = 9.12 Å, c = 11.28 Å and space groups P31, or P32[1].

References

[1] H. Kutzke,  H. Klapper,  M. Al-Mansour. "Stable and metastable crystal phases of 4-methylbenzophenone." Journal of Molecular Structure 374 1 (1995): 129–135.

4-Methylbenzophenone Preparation Products And Raw materials

Raw materials

Preparation Products

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4-Methylbenzophenone Suppliers

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View Lastest Price from 4-Methylbenzophenone manufacturers

hebei hongtan Biotechnology Co., Ltd
Product
4-Methylbenzophenone 134-84-9
Price
US $30.00/kg
Min. Order
1kg
Purity
98%
Supply Ability
2000kg
Release date
2024-03-25
Jinan Finer Chemical Co., Ltd
Product
4-Methylbenzophenone 134-84-9
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
500mt
Release date
2023-03-01
Hebei Duling International Trade Co. LTD
Product
4-Methylbenzophenone 134-84-9
Price
US $60.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
100 tons
Release date
2023-03-02

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