1,2,4,5-Benzenetetracarboxylic anhydride supplier

Name
Pyromellitic Dianhydride
EINECS 201-898-9
CAS No. 89-32-7
Article Data48
CAS DataBase
Density 1.885 g/cm³
Solubility decomposes in water
Melting Point 283-286 °C(lit.)
Formula C₁₀H₂O₆
Boiling Point 398.6 °C at 760 mmHg
Molecular Weight 218.122
Flash Point 183.5 °C
Transport Information
Appearance White powder
Safety 22-24-26-37/39
Risk Codes 41-42/43
Molecular Structure
Hazard Symbols Xn
Synonyms 1,2,4,5-Benzenetetracarboxylic1,2:4,5-dianhydride (8CI);Pyromellitic 1,2:4,5-dianhydride (6CI);1,2,4,5-Benzenetetracarboxylic acid 1,2:4,5-dianhydride;1,2,4,5-Benzenetetracarboxylic acid dianhydride;1,2:4,5-Benzenetetracarboxylicdianhydride;NSC 4798;PMDA;PMDA-M;Pyromellitic acid anhydride;Pyromelliticacid dianhydride;Pyromellitic anhydride;Pyromellitic dianhydride;
PSA 94.56000
LogP -0.50460

Synthetic route

: 89-05-4
1,2,4,5-benzenetetracarboxylic acid

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
With acetic anhydride for 3h; Reflux;	97%
With 2,6-bis[(2,2,6,6-tetramethylpiperidin-1-yl)methyl]phenylboronic acid In propyl cyanide for 12h; Reflux;	90%
2,6-bis[(2,2,6,6-tetramethylpiperidin-1-yl)methyl]phenylboronic acid In butryonitrile for 12h; Reflux;	90%

: 95-93-2
1,2,4,5-tetramethylbenzene

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
at 450 - 565℃; Leiten im Gemisch mit Luft ueber Vanadium(V)-oxid;
With oxygen at 398℃; Gas phase;

: 39144-22-4
1,4-diethyl-2,5-dimethyl-benzene

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
at 450 - 565℃; Leiten im Gemisch mit Luft ueber Vanadium(V)-oxid;

: 517-60-2
benzenehexacarboxylic acid

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
durch trockne Destillation;

: 5999-20-2
4,5-dimethylphthalic anhydride

A: 85-44-9
phthalic anhydride

B: 19438-61-0
4-methylphthalic anhydride

C: 4792-30-7
3-methylphthalic acid anhydride

D: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
With vanadia at 400℃; Product distribution; effect of temperature on gas-phase oxidation;

...Expand

: 6051-66-7
2,5-dimethylterephthalic acid

A: 108-31-6
maleic anhydride

B: 89-32-7
Pyromellitic dianhydride

C: 528-44-9
1,2,4-benzene tricarboxylic acid

D: 552-30-7
trimellitic Anhydride

Conditions

Conditions	Yield
With vanadia at 400℃; Product distribution; effect of temperature on gas-phase oxidation;

...Expand

: 18190-63-1
2,4-dimethylisophthalic acid

A: 89-32-7
Pyromellitic dianhydride

B: 528-44-9
1,2,4-benzene tricarboxylic acid

C: 552-30-7
trimellitic Anhydride

Conditions

Conditions	Yield
With vanadia at 400℃; Product distribution; effect of temperature on gas-phase oxidation of methyl-substituted carboxylic acids and anhydrides;

...Expand

benzenepentacarboxylic acid-dianhydride-(1.2;4.5): benzenepentacarboxylic acid-dianhydride-(1.2;4.5)

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
at 270 - 300℃;

: 1585-40-6
benzenepentacarboxylic acid

A: 124-38-9
carbon dioxide

B: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
at 270 - 300℃;

: 517-60-2
benzenehexacarboxylic acid

A: 124-38-9
carbon dioxide

B: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
bei der trocknen Destillation;

: 95-93-2
1,2,4,5-tetramethylbenzene

A: 89-05-4
1,2,4,5-benzenetetracarboxylic acid

B: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
Stage #1: 1,2,4,5-tetramethylbenzene With oxygen; acetic acid; cobalt(II) acetate; manganese(II) acetate; 2,6-dihydroxypyrrolo[3,4-f]isoindolo-1,3,5,7(2H,6H)tetrone In water at 120℃; under 30003 Torr; for 2h; Stage #2: With acetic anhydride In water at 120 - 150℃; under 3750.38 - 30003 Torr; for 4h; Product distribution / selectivity;

: 119-64-2
tetralin

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: aluminium chloride / 50 - 70 °C 2: bei aufeinanderfolgender Oxydation mit sodaalkalischer und mit schwefelsaurer Permanganat-Loesung 3: 290 °C / 13 Torr View Scheme
Multi-step reaction with 8 steps 1: phosphorus pentoxide / 190 °C 3: 130 - 140 °C 4: amalgamated zinc; hydrochloric acid 5: phosphorus pentachloride / nachfolgend Destillation im Vakuum 6: amalgamated zinc; concentrated hydrochloric acid 7: bei aufeinanderfolgender Oxydation mit sodaalkalischer und mit schwefelsaurer Permanganat-Loesung 8: 290 °C / 13 Torr View Scheme

: 85-01-8
phenanthrene

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1: nickel catalyst; tetralin / 200 - 220 °C / Hydrogenation 2: aluminium chloride / 80 °C 3: bei aufeinanderfolgender Oxydation mit sodaalkalischer und mit schwefelsaurer Permanganat-Loesung 4: 290 °C / 13 Torr View Scheme

: 120-12-7
anthracene

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: nickel catalyst; tetralin / 180 - 200 °C / Hydrogenation 2: bei aufeinanderfolgender Oxydation mit sodaalkalischer und mit schwefelsaurer Permanganat-Loesung 3: 290 °C / 13 Torr View Scheme

: 5440-71-1
3,4,5,6,7,8-hexahydro-1(2H)-anthracenone

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: amalgamated zinc; concentrated hydrochloric acid 2: bei aufeinanderfolgender Oxydation mit sodaalkalischer und mit schwefelsaurer Permanganat-Loesung 3: 290 °C / 13 Torr View Scheme

: 1079-71-6
1,2,3,4,5,6,7,8-octahydroanthracene

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: bei aufeinanderfolgender Oxydation mit sodaalkalischer und mit schwefelsaurer Permanganat-Loesung 2: 290 °C / 13 Torr View Scheme

: 5325-97-3
1,2,3,4,5,6,7,8-Octahydrophenanthrene

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: aluminium chloride / 80 °C 2: bei aufeinanderfolgender Oxydation mit sodaalkalischer und mit schwefelsaurer Permanganat-Loesung 3: 290 °C / 13 Torr View Scheme

: 5803-67-8
2-chloro-1-(5,6,7,8-tetrahydro-naphthalen-2-yl)-ethanone

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
Multi-step reaction with 7 steps 2: 130 - 140 °C 3: amalgamated zinc; hydrochloric acid 4: phosphorus pentachloride / nachfolgend Destillation im Vakuum 5: amalgamated zinc; concentrated hydrochloric acid 6: bei aufeinanderfolgender Oxydation mit sodaalkalischer und mit schwefelsaurer Permanganat-Loesung 7: 290 °C / 13 Torr View Scheme

: 782-27-4
4-(5,6,7,8-tetrahydronaphthalen-2-yl)butanoic acid

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1: phosphorus pentachloride / nachfolgend Destillation im Vakuum 2: amalgamated zinc; concentrated hydrochloric acid 3: bei aufeinanderfolgender Oxydation mit sodaalkalischer und mit schwefelsaurer Permanganat-Loesung 4: 290 °C / 13 Torr View Scheme

: 871893-92-4
[2-oxo-2-(5,6,7,8-tetrahydro-[2]naphthyl)-ethyl]-malonic acid

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
Multi-step reaction with 6 steps 1: 130 - 140 °C 2: amalgamated zinc; hydrochloric acid 3: phosphorus pentachloride / nachfolgend Destillation im Vakuum 4: amalgamated zinc; concentrated hydrochloric acid 5: bei aufeinanderfolgender Oxydation mit sodaalkalischer und mit schwefelsaurer Permanganat-Loesung 6: 290 °C / 13 Torr View Scheme

: 785-17-1
4-oxo-4-(5,6,7,8-tetrahydronaphthalen-2-yl)butanoic acid

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
Multi-step reaction with 5 steps 1: amalgamated zinc; hydrochloric acid 2: phosphorus pentachloride / nachfolgend Destillation im Vakuum 3: amalgamated zinc; concentrated hydrochloric acid 4: bei aufeinanderfolgender Oxydation mit sodaalkalischer und mit schwefelsaurer Permanganat-Loesung 5: 290 °C / 13 Torr View Scheme

: 89-05-4
1,2,4,5-benzenetetracarboxylic acid

: 34240-10-3
5-methyl-1,2,4-benzenetricarboxylic acid

: 528-44-9
1,2,4-benzene tricarboxylic acid

: 88-99-3
benzene-1,2-dicarboxylic acid

A: methyltrimellitic anhydride

B: 89-32-7
Pyromellitic dianhydride

C: 2479-49-4
3,3',4,4'-benzophenonetetracarboxylic acid

D: 7487-10-7
pyromellitic acid monoanhydride

Conditions

Conditions	Yield
Stage #1: 1,2,4,5-benzenetetracarboxylic acid; 5-methyl-1,2,4-benzenetricarboxylic acid; 1,2,4-benzene tricarboxylic acid; benzene-1,2-dicarboxylic acid at 235 - 250℃; for 7.5 - 30h; Stage #2: With acetic anhydride In acetic acid at 120 - 170℃; under 750.075 - 4500.45 Torr; Product distribution / selectivity;

...Expand

: 1036648-76-6
2,4,5-tris(ethoxycarbonyl)benzoic acid

A: 1036648-79-9
diethyl 1,3-dioxo-1,3-dihydroisobenzofuran-5,6-dicarboxylate

B: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
Heating;	A 31.8 g B n/a

: 89-05-4
1,2,4,5-benzenetetracarboxylic acid

: 108-24-7
acetic anhydride

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
for 2h; Reflux;

: C22H20CuN4O4(2+)*C10H2O8(4-)*2H(1+)

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
at 20 - 180℃; for 4h;

: 18779-88-9
1,1'-(1,2-ethanediyl)bis-(2,4,5-trimethylbenzene)

: 89-32-7
Pyromellitic dianhydride

Conditions

Conditions	Yield
With air; V2O5-TiO2-P2O5 catalyst at 380℃; Temperature;

: 89-32-7
Pyromellitic dianhydride

: 74-89-5
methylamine

: 26011-79-0
N,-N'-Dimethylpyromellitic acid diimide

Conditions

Conditions	Yield
at 160℃; under 600.048 Torr; Condensation; solid-gas reaction;	100%

: 89-32-7
Pyromellitic dianhydride

: 74-89-5
methylamine

: pyromellitic tetramethylamide

Conditions

Conditions	Yield
under 750.06 Torr; Condensation; solid-gas reaction; ring cleavage;	100%

: 439385-19-0
[(m-aminophenylamino)-4-aminophenylmethylidene]propanedinitrile

: 89-32-7
Pyromellitic dianhydride

polyimide; monomer(s): [(m-aminophenylamino)-4-aminophenylmethylidene]propanedinitrile; pyromellitic dianhydride: polyimide; monomer(s): [(m-aminophenylamino)-4-aminophenylmethylidene]propanedinitrile; pyromellitic dianhydride

Conditions

Conditions	Yield
In 1-methyl-pyrrolidin-2-one; chlorobenzene at 20 - 190℃;	100%

: 89-32-7
Pyromellitic dianhydride

: C8H2O3

Conditions

Conditions	Yield
With calcium fluoride at -266.46℃; Photolysis;	100%

: 5-(4-aminophenyl)-10,15,20-tris(3,5-di-tert-butylphenyl) porphyrin

: 89-32-7
Pyromellitic dianhydride

: 79098-13-8
4-hexadecylaniline

: 557-34-6
zinc diacetate

: 303955-50-2
[Zn(C20H8N4((C4H9)2C6H3)3(C6H4)(C10H2N2O4)(C6H4)(C16H33))]

Conditions

Conditions	Yield
In N,N-dimethyl-formamide (C20H10N4((C4H9)2C6H3)3(C6H4))NH2, C10H2O6, (C16H33)NH(C6H5) (dry DMF) heated under N2 in dark for 22 h, cooled to 25°C, evapd. to dryness (reduced pressure); chromy., dissolved (CHCl3), added Zn(OAc)2 in CH3OH, heated for 30 min; washed twice (H2O), dried (anhydrous Na2SO4), solvent evapd., chromy., reprecipitated from chloroform-methanol;	100%

...Expand

: 89-32-7
Pyromellitic dianhydride

: 122-51-0
orthoformic acid triethyl ester

: 6634-01-1
1,2,4,5-benzenetetracarboxylic acid ethyl ester

Conditions

Conditions	Yield
Stage #1: Pyromellitic dianhydride; orthoformic acid triethyl ester Stage #2: With water	100%
In ethanol for 4.5h; Heating;	99.2%

: 4,4'-diaminodiphenyl ether-d8

: 89-32-7
Pyromellitic dianhydride

poly[deuterated 4,4'-diaminodiphenyl ether-co-pyromellitic dianhydride]: poly[deuterated 4,4'-diaminodiphenyl ether-co-pyromellitic dianhydride]

Conditions

Conditions	Yield
In 1-methyl-pyrrolidin-2-one at 25℃; for 2h;	100%

: 89-32-7
Pyromellitic dianhydride

: 106-50-3
1,4-phenylenediamine

: C10H6O8*C6H8N2

Conditions

Conditions	Yield
Stage #1: Pyromellitic dianhydride In water at 80℃; for 1h; Inert atmosphere; Stage #2: 1,4-phenylenediamine In water at 80℃; for 4h; Inert atmosphere;	100%

: 89-32-7
Pyromellitic dianhydride

: 149-73-5
trimethyl orthoformate

: 635-10-9
tetramethyl 1,2,4,5-benzenetetracarboxylate

Conditions

Conditions	Yield
In methanol for 7.5h; Heating;	99.9%

: 89-32-7
Pyromellitic dianhydride

: 2550-73-4
pyrrolo[3,4-f]isoindole-1,3,5,7-tetraone

Conditions

Conditions	Yield
With urea In N,N-dimethyl-formamide for 0.0666667h; microwave irradiation;	99%
With choline chloride; urea at 140℃; for 1h; Green chemistry;	97%
With formamide for 0.0333333h; microwave irradiation;	96%

: 89-32-7
Pyromellitic dianhydride

: 999-97-3
1,1,1,3,3,3-hexamethyl-disilazane

: 2,6-bis-trimethylsilanyl-pyrrolo[3,4-f]isoindole-1,3,5,7-tetraone

Conditions

Conditions	Yield
at 130 - 140℃;	99%

: 89-32-7
Pyromellitic dianhydride

: 65615-90-9
(S)-methyl 3-(4-aminophenyl)-2-((tert-butoxycarbonyl)amino)propanoate

: C40H42N4O12

Conditions

Conditions	Yield
Stage #1: Pyromellitic dianhydride; (S)-methyl 3-(4-aminophenyl)-2-((tert-butoxycarbonyl)amino)propanoate With N,N-dimethyl acetamide at 20℃; for 22h; Inert atmosphere; Stage #2: With acetic anhydride; triethylamine at 80℃; for 2.5h; Inert atmosphere;	98.3%

: 89-32-7
Pyromellitic dianhydride

: 77287-34-4, 77287-35-5, 60100-09-6
formamide

: 76660-17-8
pyromellitic diimide.formamide

Conditions

Conditions	Yield
at 210℃; for 0.25h;	98%

: 1583-76-2
2-(2,3,4,5,6-pentafluorophenyl)ethan-1-amine

: 89-32-7
Pyromellitic dianhydride

: 1206633-77-3
N,N'-di(2-(perfluorophenyl)ethyl)pyromellitic diimide

Conditions

Conditions	Yield
In N,N-dimethyl-formamide at 110℃;	98%

: 61-90-5
L-leucine

: 89-32-7
Pyromellitic dianhydride

: 144443-35-6
N,N-(pyromellitoyl)-bis-L-leucine

Conditions

Conditions	Yield
With pyridine; acetic acid Reflux;	98%
With acetic acid Reflux;
With acetic acid at 20℃; for 13h; Reflux;

: 63-91-2
L-phenylalanine

: 89-32-7
Pyromellitic dianhydride

: 144443-37-8
N,N’-(pyromellitoyl)-bis-L-phenylalanine diacid

Conditions

Conditions	Yield
With pyridine; acetic acid Reflux;	98%
With dmap In N,N-dimethyl-formamide at 140℃; for 0.166667h; Reagent/catalyst; Solvent; Sealed tube; Microwave irradiation;	87%
In acetic acid at 20℃; Reflux;	86%

: 89-32-7
Pyromellitic dianhydride

: 1356860-81-5
C18H31N3O

: 1356860-83-7
(C5H4NCH2NHCO(CH2)11)2C10H2N2O4

Conditions

Conditions	Yield
Heating;	98%

: 13325-10-5
4-Aminobutanol

: 89-32-7
Pyromellitic dianhydride

: 64-19-7
acetic acid

: C22H24N2O8

Conditions

Conditions	Yield
for 19h; Reflux;	98%

...Expand

: 89-32-7
Pyromellitic dianhydride

: 89-05-4
1,2,4,5-benzenetetracarboxylic acid

Conditions

Conditions	Yield
With water for 4h; Reflux;	96.6%
With water
With alkali
With water at 80℃; Inert atmosphere;

: 64-17-5
ethanol

: 89-32-7
Pyromellitic dianhydride

: 6634-01-1
1,2,4,5-benzenetetracarboxylic acid ethyl ester

Conditions

Conditions	Yield
With sulfuric acid Reflux; Molecular sieve;	96%
With sulfuric acid at 100℃; for 4h;	68%
Stage #1: ethanol; Pyromellitic dianhydride for 2h; Reflux; Stage #2: With sulfuric acid for 18h; Reflux;	64%
With sulfuric acid In benzene
With sulfuric acid

: 89-32-7
Pyromellitic dianhydride

: 39895-56-2
4-hydroxymethyl-benzylamine

: 944247-89-6
C26H20O6N2

Conditions

Conditions	Yield
In N,N-dimethyl-formamide at 20 - 140℃; for 4.5h;	96%
In N,N-dimethyl-formamide at 20 - 140℃;	96%

: 1003601-35-1
4,4'-bis[4-(4-amino-3-methylphenoxy)benzenesulfonyl]biphenyl

: 89-32-7
Pyromellitic dianhydride

: 160038-77-7
4,4'-bis[4-(3-aminophenoxy)benzenesulfonyl]biphenyl

polyimide, Mn = 54000, Mw = 87000; monomer(s): 4,4'-bis[4-(4-amino-3-methylphenoxy)benzenesulfonyl]biphenyl; pyromellitic dianhydride: polyimide, Mn = 54000, Mw = 87000; monomer(s): 4,4'-bis[4-(4-amino-3-methylphenoxy)benzenesulfonyl]biphenyl; pyromellitic dianhydride

Conditions

Conditions	Yield
Stage #1: 4,4'-bis[4-(4-amino-3-methylphenoxy)benzenesulfonyl]biphenyl; Pyromellitic dianhydride; 4,4'-bis[4-(3-aminophenoxy)benzenesulfonyl]biphenyl In N,N-dimethyl acetamide at 20℃; for 20h; Stage #2: at 120 - 250℃; for 1.16667h; Further stages.;	96%

...Expand

: 4,4'-diaminodiphenylmethane-d10

: 89-32-7
Pyromellitic dianhydride

poly[deuterated 4,4'-diaminodiphenylmethane-co-pyromellitic dianhydride]: poly[deuterated 4,4'-diaminodiphenylmethane-co-pyromellitic dianhydride]

Conditions

Conditions	Yield
In 1-methyl-pyrrolidin-2-one at 25℃; for 2h;	96%
In 1-methyl-pyrrolidin-2-one at 25℃; for 2h;	95%

: 89-32-7
Pyromellitic dianhydride

: 500148-54-9
2-hydrazino-3-(p-chlorophenyl)-1,8-naphthyridine

: 1550370-33-6
C38H20Cl2N8O4

Conditions

Conditions	Yield
With N,N-dimethyl-formamide for 0.05h; Microwave irradiation;	96%

: 89-32-7
Pyromellitic dianhydride

: 3646-50-2
3-Amino-3-phenylpropionic acid

: 1133768-70-3
2,6-bis(3-hydroxy-3-oxo-1-phenylprop-1-yl)pyrrolo[3,4-f]isoindole-1,3,5,7(2H,6H)-tetraone

Conditions

Conditions	Yield
In nitrobenzene at 155 - 165℃; for 1h;	95%

: 18612-28-7
3-hydrazinyl-oxo-N-(1,3-thiazole-2-yl)-propanamide

: 89-32-7
Pyromellitic dianhydride

: 1145681-95-3
N-{1,3,5,7-tetraoxo-6-[2-(thiazol-2-ylcarbamoyl)acetylamino]-3,5,6,7-tetrahydro-1H-pyrrolo[3,4-f]isoindol-2-yl}-N'-thiazol-2-yl-malonamide

Conditions

Conditions	Yield
With acetic acid for 6h; Reflux;	95%

: 89-32-7
Pyromellitic dianhydride

: 1583-88-6
4-fluoro-2-phenethylamine

: 346634-46-6
N,N'-di(2-(4-fluorophenyl)ethyl)pyromellitic diimide

Conditions

Conditions	Yield
In N,N-dimethyl-formamide at 110℃;	95%

: 89-32-7
Pyromellitic dianhydride

: 123-30-8
4-amino-phenol

: 14027-98-6
N,N'-(pyromellitoyl)-bis-p-aminophenol

Conditions

Conditions	Yield
In N,N-dimethyl-formamide at 20℃; for 12h; Reflux;	95%

1,2,4,5-Benzenetetracarboxylic anhydride Chemical Properties

IUPAC Name: Furo[3,4-f][2]benzofuran-1,3,5,7-tetrone
Molecular Formula: C₁₀H₂O₆Molecular Weight: 218.119280 g/mol
Appearance: White powder
Melting Point: 283-286 °C(lit.)
Boiling Point: 397-400 °C(lit.)
Flash Point: 380 °C
Density: 1,68 g/cm³
Water Solubility: Decomposes
Sensitive: Moisture Sensitive
Structure of 1,2,4,5-Benzenetetracarboxylic anhydride (CAS NO.89-32-7):

Product Category of 1,2,4,5-Benzenetetracarboxylic anhydride (CAS NO.89-32-7): Intermediates of Dyes and Pigments;Benzene derivates;Functional Materials;Reagent for High-Performance Polymer Research

1,2,4,5-Benzenetetracarboxylic anhydride Uses

1,2,4,5-Benzenetetracarboxylic anhydride (CASNO.89-32-7) is used for making polyimide resin, high temperature electrical insulating paint, PVC plasticizers, cross-linking agent of synthetic resin and curing agent of epoxy resin.

1,2,4,5-Benzenetetracarboxylic anhydride Toxicity Data With Reference

1.	orl-rat LD50:2250 mg/kg	GISAAA Gigiena i Sanitariya. 51 (11)(1986),79.
2.	ihl-rat LCLo:150 mg/m3/4H	85GMAT Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure Izmerov, N.F., et al.,Moscow, USSR.: Centre of International Projects, GKNT,1982,105.
3.	orl-mus LD50:2400 mg/kg	TPKVAL Toksikologiya Novykh Promyshlennykh Khimicheskikh Veshchestv. Toxicology of New Industrial Chemical Sciences. 14 (1975),125.
4.	orl-gpg LD50:1595 mg/kg	GISAAA Gigiena i Sanitariya. 51 (11)(1986),79.

1,2,4,5-Benzenetetracarboxylic anhydride (CAS NO.89-32-7) hasn't been listed as a carcinogen by NTP, IARC, ACGIH, or CA Prop 65. You can see actual entry in RTECS for complete information.

1,2,4,5-Benzenetetracarboxylic anhydride Consensus Reports

Reported in EPA TSCA Inventory.

1,2,4,5-Benzenetetracarboxylic anhydride Safety Profile

Poison by inhalation. Moderately toxic by ingestion. When heated to decomposition it emits acrid smoke and irritating vapors.
Hazard Codes: Xn
Risk Statements: 41-42/43
41:Risk of serious damage to eyes
42/43:May cause sensitization by inhalation and skin contact
Safety Statements: 22-24-26-37/39
22:Do not breathe dust
24:Avoid contact with skin
26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
37/39:Wear suitable gloves and eye/face protection

1,2,4,5-Benzenetetracarboxylic anhydride Specification

1,2,4,5-Benzenetetracarboxylic anhydride , its cas register number is 89-32-7. It also can be called Pyromellitic dianhydride ; Benzene-1,2,4,5-tetracarboxylic dianhydride ; PMDA ; and Pyromellitic acid dianhydride . It is hazardous, so the first aid measures and others should be known. Such as: When on the skin: first, should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly, get medical aid. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Then get medical aid soon. While, it's inhaled: Remove from exposure and move to fresh air immediately. Give artificial respiration while not breathing. When breathing is difficult, give oxygen. And as soon as to get medical aid. Then you have the ingesting of the product: Wash mouth out with water, and get medical aid immediately. Notes to physician: Treat supportively and symptomatically.
In addition, 1,2,4,5-Benzenetetracarboxylic anhydride (CAS NO.89-32-7) could be stable under normal temperatures and pressures. It is not exposured to moist air or water, and you must not take it with incompatible materials. And also prevent it to broken down into hazardous decomposition products: carbon monoxide, carbon dioxide.

Product Name

Pyromellitic Dianhydride

Synthetic route

1,2,4,5-Benzenetetracarboxylic anhydride Chemical Properties

1,2,4,5-Benzenetetracarboxylic anhydride Uses

1,2,4,5-Benzenetetracarboxylic anhydride Toxicity Data With Reference

1,2,4,5-Benzenetetracarboxylic anhydride Consensus Reports

1,2,4,5-Benzenetetracarboxylic anhydride Safety Profile

1,2,4,5-Benzenetetracarboxylic anhydride Specification

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