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ChemicalBook >> CAS DataBase List >>4-Methylbenzophenone


Chemical Name:
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
Molecular Formula:
Molecular Weight:
MDL Number:
MOL File:
MSDS File:
Last updated:2023-11-14 13:15:32

4-Methylbenzophenone Properties

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
LogP 3.69 at 25℃
CAS DataBase Reference 134-84-9(CAS DataBase Reference)
EWG's Food Scores 1
NIST Chemistry Reference Methanone, (4-methylphenyl)phenyl-(134-84-9)
EPA Substance Registry System 4-Methylbenzophenone (134-84-9)


Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
Signal word  Warning
Hazard statements  H302-H315-H319-H335
Precautionary statements  P261-P280-P301+P312-P302+P352-P305+P351+P338
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
HS Code  29143990
NFPA 704
0 0

4-Methylbenzophenone price More Price(30)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich M29959 4-Methylbenzophenone 99% 134-84-9 10g $43.3 2023-06-20 Buy
Sigma-Aldrich 00373 4-Methylbenzophenone analytical standard 134-84-9 100mg $95.9 2022-05-15 Buy
TCI Chemical M1248 4-Methylbenzophenone >95.0%(GC) 134-84-9 25g $27 2023-06-20 Buy
TCI Chemical M1248 4-Methylbenzophenone >95.0%(GC) 134-84-9 250g $162 2023-06-20 Buy
Alfa Aesar A15479 4-Methylbenzophenone, 98% 134-84-9 50g $68.3 2023-06-20 Buy
Product number Packaging Price Buy
M29959 10g $43.3 Buy
00373 100mg $95.9 Buy
M1248 25g $27 Buy
M1248 250g $162 Buy
A15479 50g $68.3 Buy

4-Methylbenzophenone Chemical Properties,Uses,Production

Chemical Properties

white to beige crystalline powder or crystals


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


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.


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].


[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.

Synthesis of 4-Methylbenzophenone from 4-Tolylboronic acid and Benzaldehyde

4-Methylbenzophenone Preparation Products And Raw materials

Global( 537)Suppliers
Supplier Tel Email Country ProdList Advantage
Tianjin Huiren Chemtech Co., Ltd
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Hangzhou FandaChem Co.,Ltd.
+8615858145714 fandachem@gmail.com China 9365 55

View Lastest Price from 4-Methylbenzophenone manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
4-Methylbenzophenone pictures 2023-12-07 4-Methylbenzophenone
US $0.00-0.00 / kg 1kg 99% 50000kg Hebei Yibangte Import and Export Co. , Ltd.
4-Methylbenzophenone pictures 2023-12-07 4-Methylbenzophenone
US $0.00 / KG 1KG 99% 500mt Jinan Finer Chemical Co., Ltd
4-Methylbenzophenone  pictures 2023-10-12 4-Methylbenzophenone
US $0.00 / KG 1KG 99% 50000KG/month Hebei Mojin Biotechnology Co., Ltd
P-TOLYL PHENYL KETONE P-METHYLBENZOPHENONE PHENYL P-TOLYL KETONE PHENYL 4-TOLYL KETONE P-BENZOYL TOLUENE (4-methylphenyl)phenyl-methanon 4-METHYLBENZOPHENONE (4-METHYLPHENYL)PHENYLMETHANONE 4-methyl-benzophenon 4-Benzoyltoluene 4-Methylphenyl(phenyl) ketone 4-Methylphenyl(phenyl)ketone 4-Methylbenzophenone,97% (Phenyl)(4-Methylphenyl)Methanone NSC 4898 Phenyl(4-tolyl)Methanone 4-Methylphenyl-Benzophenone 4-Methylbenzopheone Photoinitiator-MBP YF-PI MBP 4-Methylbenzophenone, 97% 50GR 4-Methyl twophenyl Methyl ketone (4-Methylphenyl)phenylmethanone phenyl p-tolyl ketone 4-Methylbenzophenone Solution, 100ppm Benzophenone, 4-methyl- methyl-p-benzophenon p-Benzophenone, methyl- USAF DO-54 usafdo-54 4-Methylbenzophenone95% p-Phenyl tolyl ketone Methanone, (4-methylphenyl)phenyl- 4-METHYLBENZOPHENONE 99+% phenyl(p-tolyl)methanone 4-methlybenzophenone IHT-PI MBP HRcure-MBZ OMNIRAD 4MBZ 4-methybenzophenone 4-Methylbenzophenone Photoinitiator MBP 4-Methylbenzophenone> 4-Methylbenzophenone Mbp Lencolo 5035 Sinocure? MBP / 4-methylbenzophenone Rilpivirine Impurity 21 APi-MBP 134-84-9 KETONE Aromatics Mutagenesis Research Chemicals Benzophenone Organic Photoinitiators Polymerization Initiators Aromatic Benzophenones & Derivatives (substituted) 134-84-9
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