P-CHLOROBENZOPHENONE [(4-CHLOROPHENYL)PHENYL-METHANONE]

p-CHLOROBENZOPHENONE
PRODUCT IDENTIFICATION
CAS NO.	134-85-0
EINECS NO.	205-160-7
FORMULA	ClC₆H₄COC₆H₅
MOL WT.	216.67
H.S. CODE
TOXICITY
SYNONYMS	(4-chlorophenyl)phenyl-Methanone; para-chlorobenzophenone;
SMILES
CLASSIFICATION
PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE	white to off-white crystalline powder
MELTING POINT	77 C
BOLING POINT	195 - 196 C at 17mmHg
SPECIFIC GRAVITY
SOLUBILITY IN WATER
SOLVENT SOLUBILITY	Soluble: ethanol, diethyl ether, acetone, benzene, chloroform.
pH
VAPOR DENSITY
REFRACTIVE INDEX
AUTOIGNITION
NFPA RATINGS
FLASH POINT	143 C
STABILITY	Stable under ordinary conditions
GENERAL DESCRIPTION & APPLICATIONS
Benzophenone, an aromatic ketones (diphenyl ketone), is an important compound in organic photochemistry and perfumery as well as in organic synthesis. It is a white crystalline substance with rose-like odor; insolube in water; melting point 49 C; boiling point 305 - 306 C. Benzophenone is used as a constituent of synthetic perfumes and as a starting material for the manufacture of dyes, pesticides and drugs (especially anxiolytic and hypnotic drugs). Benzophenone is used as a photoinitiator of UV-curing applications in inks, adhesive and coatings, optical fiber as well as in printed circuit boards. Photoinitiators are compounds that break down into free radicals upon exposure to ultraviolet radiation. Photoinitiators undergo a unimolecular bond cleavage upon irradiation to yield free radicals (benzoin esters; benzil ketals; alpha-dialkoxy acetophenones; alpha-hydroxy alkylphenones; alpha-amino alkylphosphine; acylphosphine oxides). Another type of photoinitiators undergo a bimolecular reaction where the excited state of the photoinitiator interacts with a second molecule (a coinitiator) to generate free radicals (benzophenones, amines; thioxanthones, titanocenes). Ultraviolet radiation has more energy than visible light, and thus degrade the physical properties such as the appearance of organic substances and plastics. Benzophenones can act as optical filters or deactivate substrate molecules that have been excited by light for the protection polymers and organic substances. They, cosmetic grades, are used as sunscreen agents to reduce skin damage by blocking UV-A, B. Chemical ingredients for sunscreen are; p-Aminobenzoic acids p-Aminobenzoic acid (CAS #: 150-13-0) p-Aminobenzoic Acid, monoglyceryl Ester (CAS #: 136-44-7) p-Aminobenzoic Acid, octyl dimethyl Ester (Padimate 0, CAS #: 21245-02-3) p-Aminobenzoic Acid, ethyl dihydroxypropyl (Roxadimate, CAS #: 58882-17-0) p-Aminobenzoic Acid, 2,4-dihydroxy-N-(3-hydroxypropyl)-3,3-dimethylbutanamide ester Octyl Triazone (CAS #: 88122-99-0) p-Aminobenzoic Acid, PEG-25 (CAS #: 116242-27-4) Anthranilates Menthyl anthranilate (CAS #: 134-09-8) Benzophenones Benzophenone (CAS #: 119-61-9) 2,4-Dihydroxybenzophenone (Benzophenone-1, CAS #: 131-56-6) 2,2',4,4'-Tetrahydroxybenzophenone (Benzophenone-2, CAS #: 131-55-5) 2-Hydroxy-4-methoxybenzophenone (Benzophenone-3, Oxybenzone, CAS #: 131-57-7) 2-Hydroxy-4-methoxybenzophenone-5-sulfonic Acid (Benzophenone-4, Sulisobenzone, CAS #: 4065-45-6 2-Hydroxy-4-methoxybenzophenone-5-sulfonic Acid, Monosodium Salt (Benzophenone-5, CAS #: 6628-37-1) 2,2'-Dihydroxy-4,4'-dimethoxybenzophenone (Benzophenone-6, CAS #: 131-54-4) 5-Chloro-2-hydroxybenzophenone (Benzophenone-7, CAS #: 85-19-8) 2,2'-Dihydroxy-4-methoxybenzophenone (Benzophenone-8, Dioxybenzone, CAS #: 131-53-3) 2,2'-Dihydroxy-4,4'-dimethoxybenzophenone-5,5'-disulfonic Acid Sodium Salt (Benzophenone-9, CAS #: 76656-36-5) 2-Hydroxy-4-methoxy-4'-methyl-benzophenone (Benzophenone-10, Mexenone, CAS #: 1641-17-4) Bis(2,4-ihydroxyphenyl)Methanone (Benzophenone-11, CAS #: 1341-54-4) 2-Hydroxy-4-(Octyloxy)Benzophenone (Benzophenone-12, Octabenzone, CAS #: 1843-05-6) 2,2'-Dihydroxy-4-methoxybenzophenone (Dioxybenzone, CAS #: 131-53-3) 2-Hydroxy-4-methoxybenzophenone (Oxybenzone, CAS #: 131-57-7) 2-Hydroxy-4-methoxybenzophenone-5-sulphonic Acid (Sulisobenzone, CAS #: 4065-45-6) Camphors Benzylidene Camphor Sulfonic Acid (CAS #: 56039-58-8) 3-Benzylidene Camphor (CAS #: 15087-24-8) Polyacrylamidomethyl Benzylidene Camphor (CAS #: 113783-61-2) Terephthalylidene Dicamphor Sulfonic Acid (CAS #: 90457-82-2) 3-(4-Methylbenzyliden)Camphor (CAS #: 36861-47-9) Camphor Benzalkonium Methosulfate (CAS #: 52793-97-2) Bornelone (CAS #: 2226-11-1) Cinnamates Ethyl Cinnamate (CAS #: 103-36-6) 2-Ethoxyethyl-p-methoxycinnamate (Cinoxate, CAS #: 104-28-9) Isoamyl P-methoxycinnamate (CAS #: 71617-10-2) Diisopropyl Methyl Cinnamate (CAS #: 32580-71-5) 2-Ethylhexyl Alpha-cyano-beta-phenylcinnamate (Octocrylene, CAS #: 6197-30-4) Diethanolamine Methoxycinnamate (CAS #: 56265-46-4) Isopropyl Methoxycinnamate (CAS #: 5466-76-2) Isoamyl P-methoxycinnamate (CAS #: 71617-10-2) Glyceryl Octanoate Dimethoxycinnamate Ethyl Diisopropylcinnamate (CAS #: 32580-72-6) Ethyl Methoxycinnamate (CAS #: 99880-64-5) Octyl Methoxycinnamate (CAS #: 5466-77-3) Dibenzoylmethanes Dibenzoylmethane (CAS #: 120-46-7) Isopropyl Dibenzoylmethane (Eusolex, CAS #: 63250-25-9) 4-tert-Butyl-4'-methoxy-dibenzoylmethane (Avobenzone, CAS #: 70356-09-1) Salicylates 3,3,5-Trimethylcyclohexyl Salicylate (Homosalate, CAS #: 118-56-9) Benzyl Salicylate (CAS #: 118-58-1) Octyl Salicylate (CAS #: 118-60-5) 2-Hydroxyethyl Salicylate (CAS #: 87-28-5) Menthyl Salicylate (CAS #: 89-46-3) Isopropylbenzyl Salicylate (CAS #: 94134-93-7) Imidazoles Phenylbenzimidazole Phenylbenzimidazol-5-sulfonic Acid (CAS #: 27503-81-7) Phenylbenzimidazole Tea Sulfonate (CAS #: 73705-00-7) Urocanic Acid (4-Imidazoleacrylic Acid, CAS #: 104-98-3) Ethyl Urocanate (CAS #: 27538-35-8) Bisymidazylate (CAS #: 180898-37-7) Sodium Phenylbenzimidazole Sulfonate (CAS #: 5997-53-5) Others Petrolatum Jelly (CAS #: 8009-03-8) Ethyl 2-cyano-3,3-diphenylacrylate (Etocrilene, CAS #: 5232-99-5) Diurethane Dimethacrylate (CAS #: 103597-45-1) Drometrizole Trisiloxane (CAS #: 155633-54-8) Bis(Ethylhexyloxyphenol Methoxyphenol) Triazine (CAS #: 187393-00-6 2-(2-Hydroxy-5-methyl-phenyl)Benzotriazole (Drometrizole, CAS #: 2440-22-4) Dioctyl Butamido Triazone (CAS #: 154702-15-5) Inorganic compounds (physical sunscreens) Titanium dioxide Zinc oxide
SALES SPECIFICATION
APPEARANCE	white to off-white crystalline powder
PURITY	99.0% min
Benzophenone	0.2% max
ISOMER IMPURITY	0.5% max
MELTING POINT	75 C min
WATER	0.5% max
TRANSPORTATION
PACKING	25kgs in bag
HAZARD CLASS
UN NO.
PRICES