Tetrabromocatechol

Structural formula
General
Surname	Tetrabromocatechol
other names	Tetrabromobenzene-1,2-diol; 3,4,5,6-tetrabromo-1,2-dihydroxybenzene;
Molecular formula	C 6 H 2 Br 4 O 2
Brief description	whitish powder
External identifiers / databases
EC number	207-678-9
ECHA InfoCard	100.006.981
PubChem	61127
ChemSpider	55075
Wikidata	Q2406707
properties
Molar mass	425.69 g mol −1
Physical state	firmly
Melting point	189-193 ° C
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 315-319-335
	P: 261-305 + 351 + 338
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Tetrabromopychol is a chemical compound that belongs to both the phenol group and the halogen aromatic compound .

presentation

Tetrabromopychol is produced by the bromination of catechol with potassium bromide and bromine .

Tetrabromo-catechol is also formed when protocatechuic acid is boiled with bromine.

properties

Tetrabromopychol crystallizes in colorless prisms. With nitric acid , tetrabromopyrocatechol is oxidized to tetrabromo- o -benzoquinone , which melts at 150–151 ° C and crystallizes in red prisms that are soluble in ethanol , ether and benzene .

Analytical evidence

An alcoholic solution of tetrabromopyrocatechol is colored dark blue by adding iron (III) chloride .

Individual evidence

↑ ^a ^b ^c data sheet tetrabromocatechol from Sigma-Aldrich , accessed on April 23, 2011 ( PDF ).
^ Dictionary of organic compounds, p. 932 ( limited preview in Google book search).
^ Association of authors: Organikum , 19th edition, Johann Ambrosius Barth, Leipzig · Berlin · Heidelberg 1993, ISBN 3-335-00343-8 , p. 653.
^ Association of authors: Organikum , 19th edition, Johann Ambrosius Barth, Leipzig · Berlin · Heidelberg 1993, ISBN 3-335-00343-8 , p. 331.
↑ ^a ^b ^c ^d H. E. Roscoe, C. Schorlemmer: "A treatise on chemistry", 1891, p. 154; Full text .
↑ Th. Zincke: "Ueber Derivate des Ortho-Benzochinons", in: Ber. d. German Chem. Ges. , 1887 , 20 , pp. 1776-1780; doi : 10.1002 / cber.188702001399 .

[Sigma-1] ta sheet tetrabromocatechol from Sigma-Aldrich , accessed on April 23, 2011 ( PDF ).

[DOC-2] Dictionary of organic compounds, p. 932 ( limited preview in Google book search).

[3] Association of authors: Organikum , 19th edition, Johann Ambrosius Barth, Leipzig · Berlin · Heidelberg 1993, ISBN 3-335-00343-8 , p. 653.

[4] Association of authors: Organikum , 19th edition, Johann Ambrosius Barth, Leipzig · Berlin · Heidelberg 1993, ISBN 3-335-00343-8 , p. 331.

[Roscoe-5] H. E. Roscoe, C. Schorlemmer: "A treatise on chemistry", 1891, p. 154; Full text .

[Zincke-6] Th. Zincke: "Ueber Derivate des Ortho-Benzochinons", in: Ber. d. German Chem. Ges. , 1887 , 20 , pp. 1776-1780; doi : 10.1002 / cber.188702001399 .