- 4-Methylbenzophenone
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- $0.00 / 25KG
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2024-04-25
- CAS:134-84-9
- Min. Order: 1KG
- Purity: 99%
- Supply Ability: 500mt
- 4-Methylbenzophenone
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- $30.00 / 1kg
-
2024-04-22
- CAS:134-84-9
- Min. Order: 1kg
- Purity: 98%
- Supply Ability: 2000kg
- 4-Methylbenzophenone
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- $0.00 / 1kg
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2023-12-07
- CAS:134-84-9
- Min. Order: 1kg
- Purity: 99%
- Supply Ability: 50000kg
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| | 4-Methylbenzophenone Basic information |
| | 4-Methylbenzophenone Chemical 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) | | Fp | 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) |
| 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 |
| | 4-Methylbenzophenone Usage And Synthesis |
| Chemical Properties | white to beige crystalline powder or crystals | | 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 | 4-Methylbenzophenone is used as clear coatings for wood, plastic and metal, overprint varnish. | | 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 |
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