4- tert-butyl catechol

Structural formula
General
Surname	4- tert-butyl catechol
other names	4- tert- butylpyrocatechol; p - tert -butylcatechol;
Molecular formula	C 10 H 14 O 2
Brief description	beige solid with a phenolic odor
External identifiers / databases
EC number	202-653-9
ECHA InfoCard	100.002.413
PubChem	7381
Wikidata	Q840843
properties
Molar mass	166.22 g mol −1
Physical state	firmly
density	1.08 g cm −3
Melting point	52-55 ° C
boiling point	284-286 ° C
solubility	heavy in water (4.2 g l −1 at 20 ° C)
safety instructions
H and P phrases	H: 302 + 312-314-317-410
	P: 273-280-301 + 330 + 331-302 + 352-305 + 351 + 338-308 + 310
Toxicological data	2820 mg kg −1 ( LD 50 , rat , oral ) ; 661 mg kg −1 ( LD 50 , rabbit , transdermal ) ;
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

4- tert -Butylpyrocatechol is a chemical compound belonging to the group of catechol derivatives .

Extraction and presentation

4- tert-butyl catechol can be obtained by reacting catechol with MTBE .

properties

4- tert -Butylpyrocatechol is a flammable, not very volatile, beige solid with a phenol-like odor, which is sparingly soluble in water.

use

4- tert- butylpyrocatechol is used as a stabilizer to prevent the polymerization of butadiene , styrene , vinyl acetate and other reactive monomers during storage and transport. It is also used as a stabilizer in the manufacture of polyurethane foam .

safety instructions

4- tert -Butylcatechol was included in the EU's ongoing action plan ( CoRAP ) in 2016 in accordance with Regulation (EC) No. 1907/2006 (REACH) as part of substance evaluation . The effects of the substance on human health and the environment are re-evaluated and, if necessary, follow-up measures are initiated. The reasons for the uptake of 4- tert- butylpyrocatechol were concerns regarding environmental exposure and exposure of workers as well as the dangers arising from a possible assignment to the group of PBT / vPvB substances, the suspected dangers due to sensitizing properties, the possible danger due to mutagenic properties and as a potential endocrine disruptor . The re-evaluation took place from 2018 and was carried out by Poland . A final report was then published.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Entry on 4-tert-butylpyrocatechol in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .
^ Research Institute of Petroleum Processing: SYNTHESIS AND REACTION CHARACTERIZATION OF 4-TERT-BUTYLCATECHOL , accessed January 19, 2020.
↑ Rhodia-Solvay: GPS Safety Summary for TBC (4- tert -butylpyrocatechol), rev. 1 (Dec 2011) , areas of application ("General Statement" on p. 2), accessed on April 18, 2015.
↑ European Chemicals Agency (ECHA): Substance Evaluation Conclusion and Evaluation Report .
↑ Community rolling action plan ( CoRAP ) of the European Chemicals Agency (ECHA): 4-tert-butylpyrocatechol , accessed on May 1, 2020.

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Entry on 4-tert-butylpyrocatechol in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .

[2] Research Institute of Petroleum Processing: SYNTHESIS AND REACTION CHARACTERIZATION OF 4-TERT-BUTYLCATECHOL , accessed January 19, 2020.

[solvay-3] Rhodia-Solvay: GPS Safety Summary for TBC (4- tert -butylpyrocatechol), rev. 1 (Dec 2011) , areas of application ("General Statement" on p. 2), accessed on April 18, 2015.

[4] European Chemicals Agency (ECHA): Substance Evaluation Conclusion and Evaluation Report .

[5] Community rolling action plan ( CoRAP ) of the European Chemicals Agency (ECHA): 4-tert-butylpyrocatechol , accessed on May 1, 2020.