Detail of "2320-96-9"

CAS Number:
2320-96-9
Name:
Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one,4',5'-dichloro-3',6'-dihydroxy-
Molecular Structure:
Formula:
C20H10 Cl2 O5
Molecular Weight:
401.1964
Synonyms:
Fluorescein,4',5'-dichloro- (6CI,7CI,8CI); 4',5'-Dichlorofluorescein; Dichlorofluorescein
Density:
1.75g/cm³
Boiling Point:
633.9°Cat760mmHg
Flash Point:
337.2°C

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Joint toxicity of xanthene dyes to the housefly (Diptera:Muscidae): Joint toxicity of xanthene dyes to the housefly (Diptera:Muscidae). Carpenter, Terry L.; Johnson, Lynne H.; Mundie, Thomas G.; Heitz, James R. (Dep. Biochem., Mississippi State Univ., Mississippi State, MS 39762, USA). J. Econ. Entomol., 77(2), 308-12 (English) 1984. CODEN: JEENAI. ISSN: 0022-0493. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) The toxicity of erythrosin B [16423-68-0] to housefly was increased by combining it with other xanthene dyes in the following order: rose bengal [11121-48-5] 3 eosin Y [17372-87-1] 3 diiodofluorescein [33239-19-9] 3 fluorescein [2321-07-5] 3 octabromofluorescein [77274-97-6] 3 or phloxin B [18472-87-2]. Fluorescein, dichlorofluorescein [2320-96-9], and dibromofluorescein [4372-02-5] alone were nontoxic to housefly, whereas the other above dyes were toxic at concns. 1 ′ 10-5M to 3 ′ 10-3M. The synergistic effect of these dyes on erythrosin B toxicity could not be related to no. of halogens, percent halogenation, mol. wt., partition coeff., fluorescence quantum yield, overlap interval, or multiplicative value of these xanthene dyes. Thus, increased efficiency of erythrosin B in killing houseflies could be achieved by using lesser amts. of erythrosin B in combination with other dyes.

Argentimetric method for the determination of azinphos methyl using dichlorofluorescein as indicator: Argentimetric method for the determination of azinphos methyl using dichlorofluorescein as indicator. Mumtaz, Muhammad; Nasir, Nusrat; Baig, M. M. H. (Fed. 2320-96-9 and 86-50-0 are also occured in this study. Pest. Lab., Pak. Agric. Res. Counc., Malir Halt, Pak.). Pak. J. Sci. Ind. Res., 26(3), 132-3 (English) 1983. CODEN: PSIRAA. ISSN: 0030-9885. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) A simple volumetric method is described for the detn. of azinphos-methyl (I) [86-50-0] based on hydrolyzing I in MeOH with 3N NaOH in the presence of phenol followed by argentimetric titrn. of the formed O,O-di-Me H phosphorodithioate in the presence of dichlorofluorescein [2320-96-9] as indicator. To avoid any interferences from surfactants when detg. I in emulsifiable conc., a florisil column was used before the detn. .