Benzoic anhydride supplier

Name
Benzoic anhydride
EINECS 202-291-1
CAS No. 93-97-0
Article Data391
CAS DataBase
Density 1.211 g/cm³
Solubility water: 0.01 g/L
Melting Point 38-42 °C(lit.)
Formula C₁₄H₁₀O₃
Boiling Point 360 °C at 760 mmHg
Molecular Weight 226.232
Flash Point 168.4 °C
Transport Information
Appearance white to almost white crystals or crystalline
Safety 26-39-37/39
Risk Codes 37/38-41-36/37/38
Molecular Structure
Hazard Symbols Xi
Synonyms Benzoicacid, anhydride (9CI);Benzoic anhydride (8CI);Benzoylbenzoate;NSC 37116;Benzoic anhydride;
PSA 43.37000
LogP 2.68380

Synthetic route

: 98-88-4
benzoyl chloride

: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
With N-benzyl-N,N,N-triethylammonium chloride; potassium carbonate In toluene for 3h; Heating;	99%
With pyridine; 1,1,1-trichloro-3,3,3-trifluoro-propan-2-one; water In toluene for 0.5h; Ambient temperature;	97%
With water; triethylamine In acetone at 20℃; for 1h;	97%

: 65-85-0
benzoic acid

: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
With N,N-bis[2-oxo-3-oxazolidinyl]phosphorodiamidic chloride; triethylamine In dichloromethane at 20℃; for 0.5h;	99%
With 2,6-dimethylpyridine; tris(2,2'-bipyridyl)ruthenium dichloride; carbon tetrabromide; N,N-dimethyl-formamide at 25 - 30℃; for 12h; Inert atmosphere; Photolysis;	99%
With thionyl chloride In dichloromethane at 22 - 25℃; for 1h;	98.6%

: 582-25-2
Potassium benzoate

: 98-88-4
benzoyl chloride

: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
With N-benzyl-N,N,N-triethylammonium chloride In chloroform at 20℃; for 2h; Acylation;	98%
With 1,4-diaza-bicyclo[2.2.2]octane for 0.1h;	98%

: 155164-66-2
2-benzoyl-4,5-dichloropyridazin-3(2H)-one

A: 932-22-9
4,5-dichloro-2H-pyridazin-3-one

B: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
With zinc(II) chloride In acetonitrile for 7h; Heating;	A n/a B 97%

: 582-25-2
Potassium benzoate

: 65-85-0
benzoic acid

: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
Stage #1: benzoic acid With trichloroisocyanuric acid; triphenylphosphine In dichloromethane at 0 - 20℃; Stage #2: Potassium benzoate In dichloromethane at 20℃; for 0.833333h; Reagent/catalyst; Solvent; Time;	95%

: 553-72-0
zinc benzoate

: 98-88-4
benzoyl chloride

: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
In toluene at 40℃; for 0.5h;	92%

: 532-32-1
sodium benzoate

: 98-88-4
benzoyl chloride

A: 93-97-0
benzoic acid anhydride

B: 65-85-0
benzoic acid

Conditions

Conditions	Yield
Pyridine 1-oxide hydrochloride In dichloromethane; water at 22℃; Kinetics; Rate constant; Thermodynamic data; mechanism, effect of agitation, influence of ionic strength, other org. solvents, other temperatures;	A 91.8% B n/a
In dichloromethane; water Thermodynamic data; influence of ionic strength;

...Expand

: 98-88-4
benzoyl chloride

: 65-85-0
benzoic acid

: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
cobalt(II) chloride In dichloromethane; acetonitrile at 40℃; various acid chlorides, other carboxylic acids;	91%
cobalt(II) chloride In dichloromethane; acetonitrile at 40℃;	91%
With Fe/SWCNTs at 20℃; for 1.41667h;	90%

: 55-21-0
benzamide

: 65-85-0
benzoic acid

: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
With aluminum oxide In acetonitrile at 85 - 115℃; for 7h; Concentration; Temperature; Large scale;	91%

: 124-63-0
methanesulfonyl chloride

: 65-85-0
benzoic acid

A: 26926-35-2
Benzoesaeure-methansulfonsaeure-anhydrid

B: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
With triethylamine In dichloromethane at 0℃;	A 90% B 20%

...Expand

: 591-50-4
iodobenzene

: 201230-82-2
carbon monoxide

: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
With 1,3-bis-(diphenylphosphino)propane; water; palladium diacetate; triethylamine In N,N-dimethyl-formamide at 20 - 115℃; under 760.051 Torr; for 6h; Inert atmosphere; Autoclave;	90%

: 100-51-6
benzyl alcohol

: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
With tert.-butylhydroperoxide; tetrabutyl phosphonium bromide In water; chlorobenzene at 80℃; for 2.5h; Reagent/catalyst; Solvent; Temperature; Sealed tube;	90%
Multi-step reaction with 2 steps 1: trichloroisocyanuric acid / dichloromethane / 20 °C / Inert atmosphere 2: triethylamine / 1 h / 0 °C / Inert atmosphere View Scheme
Multi-step reaction with 2 steps 1: trichloroisocyanuric acid / dichloromethane / 20 °C / Inert atmosphere 2: triethylamine; water / dichloromethane / 0 - 20 °C / Inert atmosphere View Scheme

: 22574-12-5
Phenylcarbonyloxy(pyridine-2-thione)

A: 2127-03-9
2,2'-dipyridyldisulphide

B: 127878-49-3
C12H9NO2S

C: 127878-50-6
S-(pyridin-2-yl) pyridine-2-thiosulfonate

D: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
In chloroform-d1 at -27℃; for 0.25h; Irradiation;	A 22% B 13% C 20% D 88%
In dichloromethane at 0 - 5℃; for 0.5h; Product distribution; Irradiation; other solvent (CDCl3), temperature (-27 deg C), time (5 min); also other acyl derivatives investigated;	A n/a B 11% C n/a D 84%
In dichloromethane at -27℃; for 0.0833333h; Irradiation;	A n/a B 21% C n/a D 84%

...Expand

: 91292-18-1
N,N'carbonyldi<2(3H)-benzoxazolethione>

: 65-85-0
benzoic acid

A: 33388-23-7
3-benzoyl-2(3H)-benzoxazolethione

B: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
With 1-methyl-pyrrolidin-2-one In pyridine for 2h; Ambient temperature;	A 88% B n/a

...Expand

: 10028-70-3
disodium terephthalate

: 98-88-4
benzoyl chloride

A: 114833-01-1
C22H14O6

B: 93-97-0
benzoic acid anhydride

C: 65-85-0
benzoic acid

Conditions

Conditions	Yield
With Pyridine 1-oxide hydrochloride In dichloromethane; water at 18℃; Rate constant;	A 88% B 1% C 11%
With Pyridine 1-oxide hydrochloride In dichloromethane; water at 18℃;	A 88% B 1% C 11%

...Expand

: 3105-55-3, 5873-57-4, 7704-73-6, 17013-01-3, 18016-19-8, 30915-61-8, 44670-32-8, 54060-75-2, 72383-56-3, 371-47-1
sodium maleate

: 98-88-4
benzoyl chloride

A: 93-97-0
benzoic acid anhydride

B: 65-85-0
benzoic acid

Conditions

Conditions	Yield
With Pyridine 1-oxide hydrochloride In dichloromethane; water at 18℃; Rate constant;	A 12% B 88%

...Expand

: 57857-69-9
di(p-anisyl)tellurium dibenzoate

A: 4456-36-4
di(p-methoxyphenyl)tellurium dichloride

B: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
With benzoyl chloride In chloroform Heating;	A 87% B 79%

: 57857-69-9
di(p-anisyl)tellurium dibenzoate

: 98-88-4
benzoyl chloride

A: 4456-36-4
di(p-methoxyphenyl)tellurium dichloride

B: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
In chloroform Heating;	A 87% B 79%

...Expand

: 141-95-7
sodium malonate

: 98-88-4
benzoyl chloride

A: 93-97-0
benzoic acid anhydride

B: 65-85-0
benzoic acid

Conditions

Conditions	Yield
With Pyridine 1-oxide hydrochloride In dichloromethane; water at 18℃; Rate constant;	A 13% B 87%

...Expand

: 1-(benzoyl)piperidine-2,6-dione

: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
With water; scandium tris(trifluoromethanesulfonate) In benzene at 120℃; for 18h; Catalytic behavior; Reagent/catalyst; Solvent; Temperature; Inert atmosphere; Schlenk technique;	86.9%

: 672-13-9
2-hydroxy-5-methoxybenzaldehyde

: 65-85-0
benzoic acid

A: 2-formyl-4-methoxyphenyl benzoate

B: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
With iodine; triethylamine; triphenylphosphine In dichloromethane at 0 - 20℃; for 0.333333h;	A 86% B 10%

...Expand

: 64-17-5
ethanol

: 65-85-0
benzoic acid

A: 93-89-0
benzoic acid ethyl ester

B: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
With magnesium chloride at 40℃; for 36h;	A 85% B n/a

...Expand

: 100-52-7
benzaldehyde

: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
With tert.-butylhydroperoxide; tetrabutyl phosphonium bromide In chlorobenzene at 80℃; for 3h; Reagent/catalyst; Solvent; Temperature; Sealed tube;	85%
With tert.-butylhydroperoxide In acetonitrile at 80℃; for 2h; Catalytic behavior; Solvent; Reagent/catalyst;	82%
With tert.-butylhydroperoxide; palladium diacetate In chlorobenzene at 140℃; for 2h;	80%

: 10027-33-5, 18996-36-6, 25458-19-9
disodium isophthalate

: 98-88-4
benzoyl chloride

A: 93-97-0
benzoic acid anhydride

B: 65-85-0
benzoic acid

C: C22H14O6

Conditions

Conditions	Yield
With Pyridine 1-oxide hydrochloride In dichloromethane; water at 18℃; Rate constant;	A 1% B 16% C 83%
With Pyridine 1-oxide hydrochloride In dichloromethane; water at 18℃;	A 1% B 16% C 83%

...Expand

(C6H5CO2)2Cu: (C6H5CO2)2Cu

A: 93-99-2
benzoic acid phenyl ester

B: 4578-66-9
o-benzoyloxybenzoic acid

C: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
In various solvent(s) at 235℃; for 1.33333h;	A 82.1% B 6.3% C 1.5%

...Expand

: 201024-81-9
C,N-diphenylnitrone

A: 100-52-7
benzaldehyde

B: 93-97-0
benzoic acid anhydride

C: 65-85-0
benzoic acid

D: 17082-12-1
trans-azobenzene

Conditions

Conditions	Yield
With potassium In tetrahydrofuran for 16h; Product distribution; Mechanism; exclusion of O2, various conditions;	A 42% B 8% C 47% D 82%

...Expand

: 119-53-9
2-hydroxy-2-phenylacetophenone

: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
With diphenyl diselenide; dihydrogen peroxide In acetonitrile at 25℃; for 24h; Reagent/catalyst; Temperature; Solvent; Concentration; Green chemistry;	82%

: 90-05-1
2-methoxy-phenol

: 65-85-0
benzoic acid

A: 531-37-3
2-methoxyphenyl benzoate

B: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
With iodine; triethylamine; triphenylphosphine In dichloromethane at 0 - 20℃; for 0.333333h;	A 81% B 14%

...Expand

: 65-85-0
benzoic acid

: 927-80-0
1-ethoxyacetylene

A: 38425-59-1
(1-ethoxy)vinyl benzoate

B: 93-97-0
benzoic acid anhydride

Conditions

Conditions	Yield
[ruthenium(II)(η6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]2 In toluene at 40℃; for 15h;	A 80% B 5%

...Expand

: 17265-13-3
disodium azelainate

: 98-88-4
benzoyl chloride

A: 93-97-0
benzoic acid anhydride

B: 65-85-0
benzoic acid

C: C16H20O5

D: C23H24O6

Conditions

Conditions	Yield
With Pyridine 1-oxide hydrochloride In dichloromethane; water at 18℃; Rate constant;	A 3% B 8% C 9% D 80%
With Pyridine 1-oxide hydrochloride In dichloromethane; water at 18℃;	A 3% B 8% C 9% D 80%

...Expand

: 100-66-3
methoxybenzene

: 93-97-0
benzoic acid anhydride

: 611-94-9
4-Methoxybenzophenone

Conditions

Conditions	Yield
With gallium(III) trichloride; silver hexafluoroantimonate In 1,2-dichloro-ethane for 7h; Heating;	100%
With trifluoroacetic acid at 20℃; for 1.5h; Friedel-Crafts Acylation;	98%
With lithium perchlorate In nitromethane at 100℃; for 4h;	97%

: 2216-51-5
(-)-menthol

: 93-97-0
benzoic acid anhydride

: 612-33-9, 31481-49-9, 38649-18-2, 50465-37-7, 58641-29-5, 71617-14-6, 87038-98-0, 88764-74-3, 88764-75-4, 91840-42-5, 6284-35-1
L-menthyl benzoate

Conditions

Conditions	Yield
With 1-[bis(trifluoromethanesulfonyl)methyl]-2,3,4,5,6-pentafluorobenzene	100%
With 4-(1H,1H-perfluorotetradecyl)-C6F4-CH(SO2CF3)2 In toluene at 70℃; for 14h;	99%
With 4-(dimethylamino)pyridine hydrochloride In toluene at 60℃; for 6h;	98%

: 39687-95-1
isocyanoacetic acid methyl ester

: 93-97-0
benzoic acid anhydride

: 38061-18-6
methyl 5-phenyl-4-oxazolecarboxylate

Conditions

Conditions	Yield
With P(MeNCH2CH2)3N In tetrahydrofuran 1.) 5 deg C, 15 min, 2.) r.t., 30 min;	100%
With P(MeNCH2CH2)3N for 2h;	90%
With 1,8-diazabicyclo[5.4.0]undec-7-ene In tetrahydrofuran

: 90503-12-1
methyl 4,6-O-benzylidene-3-deoxy-3-iodo-α-D-glucopyranoside

: 93-97-0
benzoic acid anhydride

: 127244-71-7
methyl 2-O-benzoyl-4,6-O-benzylidene-3-deoxy-3-iodo-α-D-glucopyranoside

Conditions

Conditions	Yield
With dmap; triethylamine In dichloromethane for 2h; Heating;	100%
With triethylamine; dmap In dichloromethane

: 129090-81-9
methyl (3R)-<3-(2)H>-4-O-benzoyl-6-bromo-3,6-dideoxy-α-D-ribo-hexopyranoside

: 93-97-0
benzoic acid anhydride

: 131129-47-0
methyl (3R)-<3-(2)H>-2,4-di-O-benzoyl-6-bromo-3,6-dideoxy-α-D-ribo-hexopyranoside

Conditions

Conditions	Yield
With dmap; triethylamine In dichloromethane for 2h; Heating;	100%

: 99314-92-8
N2-amino-N3-benzyloxycarbonylaminopyridine

: 93-97-0
benzoic acid anhydride

: 99314-94-0
(2-Benzoylamino-pyridin-3-yl)-carbamic acid benzyl ester

Conditions

Conditions	Yield
With pyridine Ambient temperature; overnight;	100%

: 100590-12-3
cis-2-(iodomethyl)-3-hydroxytetrahydrofuran

: 93-97-0
benzoic acid anhydride

: 109788-30-9, 109788-31-0
cis-2-(iodomethyl)-3-benzoxytetrahydrofuran

Conditions

Conditions	Yield
With dmap; triethylamine In tetrahydrofuran Ambient temperature;	100%

: 93-97-0
benzoic acid anhydride

: 85878-21-3
C12H12F16O4Te

: 67103-71-3
1,1,2,2-tetrafluoroethyl benzoate

Conditions

Conditions	Yield
at 80 - 120℃;	100%

: 93-97-0
benzoic acid anhydride

: 85878-21-3
C12H12F16O4Te

A: 67103-71-3
1,1,2,2-tetrafluoroethyl benzoate

B: 107905-31-7
C20H16F8O6Te

Conditions

Conditions	Yield
at 20℃; for 24h; Yields of byproduct given;	A n/a B 100%

...Expand

: 93-97-0
benzoic acid anhydride

: 85878-21-3
C12H12F16O4Te

A: 67103-71-3
1,1,2,2-tetrafluoroethyl benzoate

B: 107905-28-2
C16H14F12O5Te

Conditions

Conditions	Yield
at 20℃; for 2h; ether as solvent;; Yields of byproduct given;	A n/a B 100%

...Expand

: 93-97-0
benzoic acid anhydride

: 17-<(tert-Butyldiphenylsilyl)oxy>-trans-3,4-dihydroxy-15,16-dihydro-11-methylcyclopentaphenanthrene

: 17-<(tert-Butyldiphenylsilyl)oxy>-trans-3,4-bis(benzoyloxy)-15,16-dihydro-11-methylcyclopentaphenanthrene

Conditions

Conditions	Yield
With dmap In dichloromethane for 2h;	100%

: 15356-60-2
(1S,2R,5S)-(+)-menthol

: 93-97-0
benzoic acid anhydride

: 58641-29-5
(2R,5S)-2-isopropyl-5-methyl-cyclohexyl benzoate

Conditions

Conditions	Yield
erbium(III) triflate In acetonitrile at 50℃; for 1.66667h;	100%
With trimethylsilyl trifluoromethanesulfonate In dichloromethane at 20℃; for 92h;	96%
With scandium tris(trifluoromethanesulfonate) In acetonitrile for 20h; Ambient temperature;	95%
With 2,4,6-tris(2,2-bis(trifluoromethylsulfonyl)ethyl)benzene-1,3,5-triol at 70℃; for 3h; Inert atmosphere;	93%

: 93-97-0
benzoic acid anhydride

: 100-51-6
benzyl alcohol

: 120-51-4
benzoic acid benzyl ester

Conditions

Conditions	Yield
erbium(III) triflate In acetonitrile at 50℃; for 0.833333h;	100%
With bismuth(lll) trifluoromethanesulfonate In acetonitrile for 0.5h; Heating;	98%
With tris(pentafluorophenyl)borate In neat (no solvent) at 20℃; for 0.166667h; Green chemistry;	95%

: 91-16-7
1,2-dimethoxybenzene

: 93-97-0
benzoic acid anhydride

: 4038-14-6
3,4-dimethoxybenzophenone

Conditions

Conditions	Yield
With silver perchlorate; niobium pentachloride In nitromethane at 80℃; for 7h; Friedel-Crafts acylation;	100%
With trifluorormethanesulfonic acid; titanium(IV) chloride tris(trifluoromethanesulfonate) In acetonitrile for 12h; Ambient temperature;	94%
Hf[N(SO2C8F17)2]4 In chlorobenzene at 110℃; for 2h;	94%

: 93-97-0
benzoic acid anhydride

: 191924-37-5
2-(trimethylsilyl)ethyl 3-O-benzyl-4,6-O-isopropylidene-β-D-galactopyranoside

: 2-(trimethylsilyl)ethyl 2-O-benzoyl-3-O-benzyl-4,6-O-isopropylidene-β-D-galactopyranoside

Conditions

Conditions	Yield
With pyridine for 2h; Ambient temperature;	100%

: 93-97-0
benzoic acid anhydride

: 10212-20-1
2'-deoxy-2'-fluorocytidine

: 146954-76-9
N4-benzoyl-2-deoxy-2-fluorocytidine

Conditions

Conditions	Yield
In N,N-dimethyl-formamide at 20℃;	100%
In N,N-dimethyl-formamide at 20℃;	100%
In N,N-dimethyl-formamide	92%

: 93-97-0
benzoic acid anhydride

: 4358-64-9
cis-1,4-anhydroerythritol

: cis-3-benzoyloxy-4-hydroxytetrahydrofuran

Conditions

Conditions	Yield
ytterbium(III) chloride In tetrahydrofuran Acylation;	100%
With ytterbium(III) chloride In tetrahydrofuran	100%

Benzoic anhydride Specification

The Benzoic anhydride is an organic compound with the formula C₁₄H₁₀O₃. The IUPAC name of this chemical is benzoyl benzoate. With the CAS registry number 93-97-0, it is also named as phenylcarbonyl benzoate. The product's categories are Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts; Biochemistry; Nucleosides, Nucleotides & Related Reagents; Protecting Agents for Hydroxyl and Amino Groups; Protecting Agents, Phosphorylating Agents & Condensing Agents; Reagents for Oligosaccharide Synthesis; Carboxylic Acid Anhydrides; Carbonyl Compounds; Organic Building Blocks. Besides, it is a white to almost white crystal or crystalline, which should be stored in a closed cool and dry palce. It is a major industrial chemical widely used for preparing acetate esters, e.g. cellulose acetate.

Physical properties about Benzoic anhydride are: (1)ACD/LogP: 2.738; (2)ACD/LogD (pH 5.5): 2.74; (3)ACD/LogD (pH 7.4): 2.74; (4)ACD/BCF (pH 5.5): 70.94; (5)ACD/BCF (pH 7.4): 70.94; (6)ACD/KOC (pH 5.5): 735.32; (7)ACD/KOC (pH 7.4): 735.32; (8)#H bond acceptors: 3; (9)#Freely Rotating Bonds: 4; (10)Index of Refraction: 1.59; (11)Molar Refractivity: 62.992 cm³; (12)Molar Volume: 186.741 cm³; (13)Polarizability: 24.972 10-24cm3; (14)Surface Tension: 48.5200004577637 dyne/cm; (15)Density: 1.211 g/cm³; (16)Flash Point: 168.44 °C; (17)Enthalpy of Vaporization: 60.566 kJ/mol; (18)Boiling Point: 360 °C at 760 mmHg

Preparation of Benzoic anhydride: Benzoic anhydride is mainly produced by the carbonylation of methyl acetate. Maleic anhydride is produced by the oxidation of benzene or butane. Laboratory routes emphasize the dehydration of the corresponding acids. The conditions vary from acid to acid, but phosphorus pentoxide is a common dehydrating agent:
2 CH₃COOH + P₄O₁₀ → CH₃C(O)OC(O)CH₃ + "(HO)₂P₄O₉"

Uses of Benzoic anhydride: it can be used to produce furan-2-yl-phenyl-methanone by heating. This reaction is a kind of Friedel-Crafts acylation. It will need solvent CH₂Cl₂. The yield is about 80%.

When you are using this chemical, please be cautious about it as the following:
It is risk of serious damage to eyes. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Besides, this chemical is irritating to eyes, respiratory system and skin. When you are using it, wear suitable gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C(OC(=O)c1ccccc1)c2ccccc2
(2)InChI: InChI=1/C14H10O3/c15-13(11-7-3-1-4-8-11)17-14(16)12-9-5-2-6-10-12/h1-10H
(3)InChIKey: CHIHQLCVLOXUJW-UHFFFAOYAU
(4)Std. InChI: InChI=1S/C14H10O3/c15-13(11-7-3-1-4-8-11)17-14(16)12-9-5-2-6-10-12/h1-10H
(5)Std. InChIKey: CHIHQLCVLOXUJW-UHFFFAOYSA-N

Product Name

Benzoic anhydride

Synthetic route

Benzoic anhydride Specification

Related Products

Hot Products