Home > Name List By 2 > 2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxy-2-methylphenyl)-1,1-dioxo-2, 1λ

CAS No 76-60-8 , 2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxy-2-methylphenyl)-1,1-dioxo-2,
1λ

  • Name: 2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxy-2-methylphenyl)-1,1-dioxo-2,
    1λ
  • Synonyms: 76-60-8;2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxy-2-methylphenyl)-1,1-dioxo-2,
    1λ 3',3'',5',5''-Tetrabromo-m-cresolsulfonephthalein;6-benzoxathiol-3-yl]-3-methylphenol; Bromocresol blue; BROMCRESOL GREEN;Bromocresol green; Tetrabromo-m-cresolphthalein sulfone;
  • CAS Registry Number:
  • Transport: UN 1219
  • Melting Point: 225 ºC
  • Density: 0.79
  • Safety Statements: R36/37/38
  • Hazard Symbols: Xi: Irritant;
  • HS Code: 29349990
  • EINECS: 200-972-8
  • Molecular Weight: 698.01386
  • InchiKey: FRPHFZCDPYBUAU-UHFFFAOYSA-N
  • InChI: InChI=1S/C21H14Br4O5S/c1-9-12(7-14(22)19(26)17(9)24)21(13-8-15(23)20(27)
    18(25)10(13)2)11-5-3-4-6-16(11)31(28,29)30-21/h3-8,26-27H,1-2H3
  • Risk Statements: S26;S37/39
  • Molecular Formula: C21H14Br4O5S
  • Molecular Structure:CAS No:76-60-8 2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxy-2-methylphenyl)-1,1-dioxo-2,<br />1λ

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References of 2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxy-2-methylphenyl)-1,1-dioxo-2,
1λ
Title: Bromcresol Green
CAS Registry Number: 76-60-8
CAS Name: 4,4￠-(3H-2,1-Benzoxathiol-3-ylidene)bis[2,6-dibromo-3-methylphenol] S,S-dioxide
Synonyms: a,a-bis(3,5-dibromo-4-hydroxy-o-tolyl)-a-hydroxytoluenesulfonic acid, g-sultone; 3,3￠,5,5￠-tetrabromo-m-cresolsulfonphthalein
Molecular Formula: C21H14Br4O5S
Molecular Weight: 698.01
Percent Composition: C 36.13%, H 2.02%, Br 45.79%, O 11.46%, S 4.59%
Literature References: Prepd by adding bromine to a suspension of m-cresolsulfonphthalein in glacial acetic acid: Clark, Lubs, J. Wash. Acad. Sci. 5, 610 (1915); 6, 481 (1916); J. Bacteriol. 2, 110 (1917); Cohen, Biochem. J. 16, 31 (1922); 17, 535 (1923); Cohen, Public Health Rep. 38, 814 (1923); 41, 3051 (1926); Proc. Soc. Exp. Biol. Med. 20, 124 (1922); Orndorff, Purdy, J. Am. Chem. Soc. 48, 2216 (1926).
Properties: Minute, slightly yellow crystals from acetic acid, mp 218-219°. Sparingly sol in water. Readily sol in alcohol, ether, ethyl acetate. Fairly sol in benzene. Very sensitive to alkalies, tap water being sufficiently alkaline to give the characteristic blue-green color. pK = 4.7. To prepare a soln for use as pH indicator, dissolve 0.10 g in 7.15 ml N/50 NaOH and dil with water to 250 ml. To prepare a soln for use as indicator in volumetric work, dissolve 0.1 g in 250 ml alc.
Melting point: mp 218-219°
pKa: pK = 4.7
Use: As indicator, pH 3.8 yellow; pH 5.4 blue-green.