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2,5-Di(tert-amyl)hydroquinone
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Name

2,5-Di(tert-amyl)hydroquinone

 EINECS 201-222-2
CAS No. 79-74-3 Density 0.99 g/cm3
PSA 40.46000 LogP 4.47300
Solubility 200ng/L at 20℃ Melting Point 179 °C
Formula C16H26 O2 Boiling Point 364.8 °C at 760 mmHg
Molecular Weight 250.381 Flash Point 162.7 °C
Transport Information N/A Appearance White powder
Safety Poison by intraperitoneal route. Low toxicity by ingestion. When heated to decomposition it emits acrid smoke and irritating fumes. Risk Codes N/A
Molecular Structure Molecular Structure of 79-74-3 (2,5-Di(tert-amyl)hydroquinone) Hazard Symbols N/A
Synonyms

Hydroquinone,2,5-di-tert-pentyl- (6CI,7CI,8CI); 2,5-Bis(1,1-dimethylpropyl)-1,4-benzenediol;2,5-Bis(1,1-dimethylpropyl)hydroquinone;2,5-Di(tert-amyl)-1,4-benzohydroquinone; 2,5-Di(tert-amyl)hydroquinone;2,5-Di-t-amylhydroquinone; 2,5-Di-tert-amylhydroquinone;2,5-Di-tert-pentylhydroquinone; AH 25; Antage DAH; DAH; DAHQ; DTAHQ; Lowinox AH25; NSC 455; NSC 6267; Santovar A; Santovar TAHQ

Article Data 37

2,5-Di(tert-amyl)hydroquinone Synthetic route

513-35-9

2-methyl-but-2-ene

123-31-9

hydroquinone

79-74-3

2,5-di(tert-amyl)-1,4-hydroquinone

Conditions
ConditionsYield
methanesulfonic acid In toluene at 55 - 70℃; for 7h; Product distribution / selectivity;90%
toluene-4-sulfonic acid In toluene at 85 - 110℃; for 4.5 - 7.5h; Product distribution / selectivity;
75-85-4

tert-Amyl alcohol

123-31-9

hydroquinone

79-74-3

2,5-di(tert-amyl)-1,4-hydroquinone

Conditions
ConditionsYield
With sulfuric acid; acetic acid at 20℃; for 7h;78%
With sulfuric acid
methanesulfonic acid In toluene at 88 - 110℃; for 8.5h; Product distribution / selectivity;
123-31-9

hydroquinone

79-74-3

2,5-di(tert-amyl)-1,4-hydroquinone

Conditions
ConditionsYield
With acetic acid man gibt dann Amylen zu;
513-35-9

2-methyl-but-2-ene

7664-93-9

sulfuric acid

64-19-7

acetic acid

123-31-9

hydroquinone

79-74-3

2,5-di(tert-amyl)-1,4-hydroquinone

123-31-9

hydroquinone

tert.-pentyl chloride

tert.-pentyl chloride

79-74-3

2,5-di(tert-amyl)-1,4-hydroquinone

Conditions
ConditionsYield
With ethanol; zinc(II) chloride
4584-63-8

2,5-bis-(1,1-dimethylpropyl)-1,4-benzoquinone

64-19-7

acetic acid

zinc dust

zinc dust

79-74-3

2,5-di(tert-amyl)-1,4-hydroquinone

64-17-5

ethanol

90-05-1

2-methoxy-phenol

A

1020-31-1

3,5-Di-tert-butylcatechol

B

128-39-2

2,6-di-tert-butylphenol

C

2934-05-6

2,4-diisopropylphenol

D

2078-54-8

2,6-diisopropylphenol

E

2934-07-8

2,4,6-triisopropylphenol

F

4130-42-1

2,6-di-tert-butyl-4-ethylphenol

G

2444-28-2

2,6-di-tert-butyl-4-hydroxyphenol

H

87-97-8

2,6-di-tert-butyl-4-methoxymethylene-phenol

I

1138-52-9

3,5-Di-tert-butylphenol

J

1879-09-0

2,4-dimethyl-6-tert-butylphenol

K

52417-48-8

2-(2',5'-dimethoxyphenyl)propionaldehyde

L

17540-75-9

2,6-di-tert-butyl-4-sec-butylphenol

M

2050-46-6

1,2-diethoxybenzene

N

21112-37-8

1,4-dimethoxy-2-tert-butylbenzene

O

5076-72-2

1-ethoxy-4-methoxybenzene

P

79-74-3

2,5-di(tert-amyl)-1,4-hydroquinone

Q

120-95-6

2,4-di-tert-amylphenol

R

876-20-0

2,5-diethyl phenol

S

33963-27-8

4-ethoxy-3-methoxytoluene

T

59056-76-7

1,2-dimethoxy-4-butylbenzene

U

131358-04-8

1,2-diethoxy-4-ethyl-benzene

V

1620-98-0

3,5-di-t-butyl-4-hydroxybenzaldehyde

Conditions
ConditionsYield
With ortho-tungstic acid at 300℃; for 6h; Autoclave;
...Expand
64-17-5

ethanol

90-05-1

2-methoxy-phenol

A

94-71-3

2-Ethoxyphenol

B

1020-31-1

3,5-Di-tert-butylcatechol

C

2934-05-6

2,4-diisopropylphenol

D

2078-54-8

2,6-diisopropylphenol

E

2934-07-8

2,4,6-triisopropylphenol

F

4130-42-1

2,6-di-tert-butyl-4-ethylphenol

G

2444-28-2

2,6-di-tert-butyl-4-hydroxyphenol

H

87-97-8

2,6-di-tert-butyl-4-methoxymethylene-phenol

I

1138-52-9

3,5-Di-tert-butylphenol

J

1879-09-0

2,4-dimethyl-6-tert-butylphenol

K

52417-48-8

2-(2',5'-dimethoxyphenyl)propionaldehyde

L

17540-75-9

2,6-di-tert-butyl-4-sec-butylphenol

M

2050-46-6

1,2-diethoxybenzene

N

21112-37-8

1,4-dimethoxy-2-tert-butylbenzene

O

5076-72-2

1-ethoxy-4-methoxybenzene

P

79-74-3

2,5-di(tert-amyl)-1,4-hydroquinone

Q

120-95-6

2,4-di-tert-amylphenol

R

876-20-0

2,5-diethyl phenol

S

33963-27-8

4-ethoxy-3-methoxytoluene

T

59056-76-7

1,2-dimethoxy-4-butylbenzene

U

131358-04-8

1,2-diethoxy-4-ethyl-benzene

V

1620-98-0

3,5-di-t-butyl-4-hydroxybenzaldehyde

Conditions
ConditionsYield
With tungsten(VI) oxide at 300℃; for 6h; Reagent/catalyst; Autoclave;
...Expand
64-17-5

ethanol

120-80-9

benzene-1,2-diol

A

1020-31-1

3,5-Di-tert-butylcatechol

B

128-39-2

2,6-di-tert-butylphenol

C

2934-05-6

2,4-diisopropylphenol

D

2078-54-8

2,6-diisopropylphenol

E

2934-07-8

2,4,6-triisopropylphenol

F

4130-42-1

2,6-di-tert-butyl-4-ethylphenol

G

2444-28-2

2,6-di-tert-butyl-4-hydroxyphenol

H

87-97-8

2,6-di-tert-butyl-4-methoxymethylene-phenol

I

1138-52-9

3,5-Di-tert-butylphenol

J

1879-09-0

2,4-dimethyl-6-tert-butylphenol

K

52417-48-8

2-(2',5'-dimethoxyphenyl)propionaldehyde

L

17540-75-9

2,6-di-tert-butyl-4-sec-butylphenol

M

2050-46-6

1,2-diethoxybenzene

N

21112-37-8

1,4-dimethoxy-2-tert-butylbenzene

O

5076-72-2

1-ethoxy-4-methoxybenzene

P

79-74-3

2,5-di(tert-amyl)-1,4-hydroquinone

Q

120-95-6

2,4-di-tert-amylphenol

R

876-20-0

2,5-diethyl phenol

S

33963-27-8

4-ethoxy-3-methoxytoluene

T

59056-76-7

1,2-dimethoxy-4-butylbenzene

U

131358-04-8

1,2-diethoxy-4-ethyl-benzene

V

1620-98-0

3,5-di-t-butyl-4-hydroxybenzaldehyde

Conditions
ConditionsYield
With ortho-tungstic acid at 300℃; for 6h; Autoclave;
...Expand
94-71-3

2-Ethoxyphenol

64-17-5

ethanol

A

1020-31-1

3,5-Di-tert-butylcatechol

B

128-39-2

2,6-di-tert-butylphenol

C

2934-05-6

2,4-diisopropylphenol

D

2078-54-8

2,6-diisopropylphenol

E

2934-07-8

2,4,6-triisopropylphenol

F

4130-42-1

2,6-di-tert-butyl-4-ethylphenol

G

2444-28-2

2,6-di-tert-butyl-4-hydroxyphenol

H

87-97-8

2,6-di-tert-butyl-4-methoxymethylene-phenol

I

1138-52-9

3,5-Di-tert-butylphenol

J

1879-09-0

2,4-dimethyl-6-tert-butylphenol

K

52417-48-8

2-(2',5'-dimethoxyphenyl)propionaldehyde

L

17540-75-9

2,6-di-tert-butyl-4-sec-butylphenol

M

2050-46-6

1,2-diethoxybenzene

N

21112-37-8

1,4-dimethoxy-2-tert-butylbenzene

O

5076-72-2

1-ethoxy-4-methoxybenzene

P

79-74-3

2,5-di(tert-amyl)-1,4-hydroquinone

Q

120-95-6

2,4-di-tert-amylphenol

R

876-20-0

2,5-diethyl phenol

S

33963-27-8

4-ethoxy-3-methoxytoluene

T

59056-76-7

1,2-dimethoxy-4-butylbenzene

U

131358-04-8

1,2-diethoxy-4-ethyl-benzene

V

1620-98-0

3,5-di-t-butyl-4-hydroxybenzaldehyde

Conditions
ConditionsYield
With ortho-tungstic acid at 300℃; for 6h; Autoclave;
...Expand

2,5-Di(tert-amyl)hydroquinone Chemical Properties

Molecular Formula: C16H26O2
Formula Weight: 250.38
IUPAC Name: 2,5-Bis(2-methylbutan-2-yl)benzene-1,4-diol
Synonyms: 2,5-Bis(1,1-dimethylpropyl)hydroquinone ; 2,5-Di-tert-pentylbenzene-1,4-diol ; 4-Benzenediol,2,5-bis(1,1-dimethylpropyl)-1 ; 2,5-Di-tert-pentylbenzene-1,4-diol
Melting Point of 2,5-Di(tert-amyl)hydroquinone (79-74-3): 179 °C
Flash Point of 2,5-Di(tert-amyl)hydroquinone (79-74-3): 162.7 °C 
Boiling Point: 364.8 °C at 760 mmHg 
Density of 2,5-Di(tert-amyl)hydroquinone (79-74-3): 0.99 g/cm3 
Vapour Pressure: 7.84E-06 mmHg at 25°C 
Index of Refraction: 1.513

2,5-Di(tert-amyl)hydroquinone Toxicity Data With Reference

1.    

orl-rat LD50:2 g/kg

     IPSTB3    International Polymer Science and Technology. 3 (1976),93.
2.    

ipr-mus LD50:200 mg/kg

     NTIS**    National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) AD277-689 .
3.    

orl-rbt LD50:2 g/kg

     IPSTB3    International Polymer Science and Technology. 3 (1976),93.

2,5-Di(tert-amyl)hydroquinone Consensus Reports

Reported in EPA TSCA Inventory.

2,5-Di(tert-amyl)hydroquinone Safety Profile

Poison by intraperitoneal route. Low toxicity by ingestion. When heated to decomposition it emits acrid smoke and irritating fumes.
RTECS : MX6300000

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