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Name |
4,5,6,7-Tetrachlorophthalide |
EINECS | N/A |
CAS No. | 27355-22-2 | Density | 1.767g/cm3 |
PSA | 26.30000 | LogP | 3.97060 |
Solubility | N/A | Melting Point |
209-210oC |
Formula | C8H2 Cl4 O2 | Boiling Point | 464.4°Cat760mmHg |
Molecular Weight | 271.915 | Flash Point | 215.8°C |
Transport Information | N/A | Appearance | white to light yellow crystal powder |
Safety | Low toxicity by ingestion, inhalation, and skin contact. When heated to decomposition it emits toxic vapors of Cl−. | Risk Codes | R36/37/38 |
Molecular Structure | Hazard Symbols | Xi | |
Synonyms |
Phthalide,4,5,6,7-tetrachloro- (6CI,8CI); 4,5,6,7-Tetrachlorophthalide; Fthalide;Phthalide; Rabcide; Tetrachlorophthalide |
Article Data | 9 |
IUPAC Name: 4,5,6,7-Tetrachloro-3H-2-benzofuran-1-one
Synonyms of 4,5,6,7-Tetrachlorophthalide (CAS NO.27355-22-2) : 4,5,6,7-Tetrachloro-1(3H)-isobenzofuranone (9CI) ; 4,5,6,7-Tetrachlorophthalidefthalide ; Fthalide ; Phthalide ; Rabcide ; 1(3H)-Isobenzofuranone, 4,5,6,7-tetrachloro- ; Phthalide, 4,5,6,7-tetrachloro-
CAS NO:27355-22-2
Molecular Formula:C8H2Cl4O2
Molecular Weight :271.912280 g/mol
Molecular Structure :
EINECS: 229-405-2
Index of Refraction: 1.635
Surface Tension: 59 dyne/cm
Density: 1.767 g/cm3
Flash Point: 215.8 °C
Enthalpy of Vaporization: 72.58 kJ/mol
Boiling Point: 464.4 °C at 760 mmHg
Vapour Pressure: 8.38E-09 mmHg at 25°C
Storage temp: 0-6°C
Appearance: Pure 4,5,6,7-Tetrachlorophthalide (CAS NO.27355-22-2) is white crystal.
Melting Point:209 ~ 210°C
Solubility at 25 °C as follows: tetrahydrofuran 19.3g / L, benzene, 14.1g / L, acetone, 8.3g / L, ethanol, 1.1g / L, water 2.49mg / L.
4,5,6,7-Tetrachlorophthalide (CAS NO.27355-22-2) is an anti-blast protective fungicides.When use it, spray before bacteria invade rice plants , and It can effectively inhibit spore attaching to the surface of rice plants to prevent the hyphae penetrated, so it has a good control effect.
Mix 100g 3,4,5,6-α,α,α',α'-8 Chloro-o-xylene with 900g 95% sulfuric acid , after mix it up to 130 ~ 140 °C, heat it for 5h until the non-hydrogen chloride gas escape , cold it to room temperature, and then slowly poured into ice water, precipitation of light yellow crystal, leaching, washing, drying ,obtain about 70g 4,5,6,7-Tetrachlorophthalide (CAS NO.27355-22-2).
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
mouse | LD50 | intraperitoneal | > 10gm/kg (10000mg/kg) | Japan Pesticide Information. Vol. (36), Pg. 32, 1979. | |
mouse | LD50 | oral | > 10gm/kg (10000mg/kg) | Japan Pesticide Information. Vol. (36), Pg. 32, 1979. | |
mouse | LD50 | skin | > 10gm/kg (10000mg/kg) | Japan Pesticide Information. Vol. (40), Pg. 32, 1982. | |
mouse | LD50 | subcutaneous | > 10gm/kg (10000mg/kg) | Japan Pesticide Information. Vol. (36), Pg. 32, 1979. | |
rat | LC | inhalation | > 4100mg/m3 (4100mg/m3) | Nippon Noyaku Gakkaishi. Journal of the Pesticide Science Society of Japan. Vol. 15, Pg. 311, 1990. | |
rat | LD50 | intraperitoneal | 9780mg/kg (9780mg/kg) | Japan Pesticide Information. Vol. (36), Pg. 32, 1979. | |
rat | LD50 | oral | 20gm/kg (20000mg/kg) | "Agricultural Chemicals," Thomson, W.T., 4 vols., Fresno, CA, Thomson Publications, 1976/77 revisionVol. 4, Pg. 73, 1976/1977. | |
rat | LD50 | skin | > 10gm/kg (10000mg/kg) | Japan Pesticide Information. Vol. (36), Pg. 32, 1979. | |
rat | LD50 | subcutaneous | > 10gm/kg (10000mg/kg) | Japan Pesticide Information. Vol. (36), Pg. 32, 1979. |
Low toxicity by ingestion, inhalation, and skin contact. When heated to decomposition it emits toxic vapors of Cl−.