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85-43-8

  • Product NameTetrahydrophthalic anhydride
  • Molecular FormulaC8H8O3
  • Molecular Weight152.15
  • Purity99%
  • AppearanceWHITE CRYSTALLINE POWDER
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Product Details

Quick Details

  • CasNo： 85-43-8
  • Molecular Formula： C8H8O3
  • Appearance： WHITE CRYSTALLINE POWDER
  • Purity： 99%

Good Supplier Export Industrial Grade 99% Tetrahydrophthalic Anhydride 85-43-8 Intermediates White Crystalline

  • Molecular Formula:C8H8O3
  • Molecular Weight:152.15
  • Appearance/Colour:WHITE CRYSTALLINE POWDER 
  • Vapor Pressure:0.001mmHg at 25°C 
  • Melting Point:101-102 °C 
  • Refractive Index:1.529 
  • Boiling Point:305.6 °C at 760 mmHg 
  • PKA:3.84[at 20 ℃] 
  • Flash Point:148.2 °C 
  • PSA：43.37000 
  • Density:1.289 g/cm3 
  • LogP:0.65220 

CIS-1,2,3,6-TETRAHYDROPHTHALIC ANHYDRIDE; >98%(Cas 85-43-8) Usage

Definition

ChEBI: 1,2,3,6-tetrahydrophthalic anhydride is a cyclic dicarboxylic anhydride that is 1,3,3a,4,7,7a-hexahydro-2-benzofuran carrying oxo groups at positions 1 and 3. It is a cyclic dicarboxylic anhydride and a tetrahydrofurandione.

General Description

Clear colorless to light yellow slight viscous liquid. Highly toxic and a strong irritant to skin, eyes and mucous membranes. Corrosive to skin and metal. Used in making polyester, alkyd resins, and plasticizers.

Air & Water Reactions

Reacts exothermically with water to form memtetrahydrophthalic acid.

Reactivity Profile

CIS-1,2,3,6-TETRAHYDROPHTHALIC ANHYDRIDE; >98% is combustible. Reacts with oxidizers. Reacts exothermically with water. These reactions are usually slow, but can become violent when local heating accelerates their rate. Acids accelerate the reaction with water. Incompatible with acids, strong oxidizing agents, alcohols, amines, and bases.

Health Hazard

TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Fire Hazard

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.

Flammability and Explosibility

Nonflammable

Safety Profile

Moderately toxic by intraperitoneal route. Mildly toxic by ingestion. A corrosive irritant to skin, eyes, and mucous membranes. Combustible when exposed to heat or flame. Will react with water or steam to produce heat; can react with oxidizing materials. To fight fre, use water, foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ANHYDRIDES.

InChI:InChI=1/C8H8O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1,3,5-6H,2,4H2

85-43-8 Relevant articles

Method for preparing butane tetracarboxylic dianhydride

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Page/Page column 4-6, (2018/10/11)

The invention discloses a method for pre...

Heterogeneous catalysts for the cyclization of dicarboxylic acids to cyclic anhydrides as monomers for bioplastic production

Rashed, Md. N.,Siddiki,Ali, Md. A.,Moromi, Sondomoyee K.,Touchy, Abeda S.,Kon, Kenichi,Toyao, Takashi,Shimizu, Ken-Ichi

, p. 3238 - 3242 (2017/07/28)

Cyclic anhydrides, key intermediates of ...

Solvent-free Diels-Alder reaction in a closed batch system

Sun, Daolai,Sato, Fumiya,Yamada, Yasuhiro,Sato, Satoshi

, p. 276 - 282 (2013/05/08)

Solvent-free Diels-Alder reactions were ...

CATALYST FOR ALKYLATION AND PROCESS FOR PRODUCING ALKYLAROMATIC HYDROCARBON COMPOUND USING THE CATALYST

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Paragraph 0051; 0072, (2013/03/26)

A catalyst for alkylation contains an in...

85-43-8 Process route

o-xylene
95-47-6

o-xylene

dimethyl cyclohex-4-ene-1,2-dicarboxylate
7500-55-2

dimethyl cyclohex-4-ene-1,2-dicarboxylate

3,4-dimethoxycarbonylcyclohexyl-3′,4′-dimethylbenzene
1352221-13-6

3,4-dimethoxycarbonylcyclohexyl-3′,4′-dimethylbenzene

1,2,3,6-Tetrahydrophthalic anhydride
85-43-8

1,2,3,6-Tetrahydrophthalic anhydride

Conditions
Conditions Yield
With Tridecane; In methanol; at 180 ℃; for 2h; Reagent/catalyst; Concentration; Inert atmosphere;
92.2%
maleic anhydride
108-31-6

maleic anhydride

buta-1,3-diene
106-99-0,130983-70-9,29406-96-0,9003-17-2

buta-1,3-diene

1,2,3,6-Tetrahydrophthalic anhydride
85-43-8

1,2,3,6-Tetrahydrophthalic anhydride

Conditions
Conditions Yield
at 80 - 110 ℃; for 4h; Temperature; Large scale;
98.1%
 
 80%
With benzene; at 100 ℃;
 
With benzene; at 115 - 145 ℃;
 
With benzene; at 20 ℃;
 
In 1,4-dioxane; at 30 ℃; Yield given;
 
In 1,4-dioxane; at 30 ℃; Rate constant; Kinetics;
 
 
  
 
  
In neat (no solvent); at 30 ℃; for 2h; Green chemistry;
95.6 %Chromat.

85-43-8 Upstream products

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    2,3-dimethylbutene

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    buta-1,3-diene

  • 77-79-2
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    3-Sulfolene

85-43-8 Downstream products

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    6-thiazol-2-ylcarbamoyl-cyclohex-3-enecarboxylic acid

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    1,2,3,6-Tetrahydrophthalsaeure-bis-dimethylamid

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