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19438-60-9

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19438-60-9 Usage

Description

Methylhexahydrophthalic anhydride (MHHP A) is an epoxy hardener, irritant to skin and mucus membranes. It is included in non-diglycidyl-ether-of-bisphenol- A epoxy resins. It can induce both allergic contact dermatitis and immunologic contact urticaria. MHHP A is structurally close to methyltetrahydrophthalic anhydride (MTHP A), which can also cause sensitization.

Chemical Properties

Hexahydro-4-methylphthalic anhydride has a melting point of 29 °C, so it is a liquid at room temperature. It has a boiling point of 120 °C and at 25 °C its density is 1.162 g/mL.

Uses

Hexahydro-4-methylphthalic anhydride, mixture of?cis?and?trans may be used as an analytical standard for the determination of the analyte in human biological samples by gas chromatography-mass spectrometry (GC-MS).

General Description

Methylhexahydrophthalic anhydride, a congener of phthalic anhydride, is utilized in the production of plastics, paints, and electronic components. It can potentially result in allergenic effects on humans upon exposure and cause immunological reactions.

Flammability and Explosibility

Nonflammable

Contact allergens

Methylhexahydrophthalic anhydride is an epoxy hardener, irritant to skin and mucous membranes. It is included in nondiglycidyl-ether-of-bisphenol-A epoxy resins. It can induce both allergic contact dermatitis and immunologic contact urticaria. It is structurally close to methyltetrahydrophthalic anhydride, which can also cause sensitization.

Check Digit Verification of cas no

The CAS Registry Mumber 19438-60-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,4,3 and 8 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 19438-60:
(7*1)+(6*9)+(5*4)+(4*3)+(3*8)+(2*6)+(1*0)=129
129 % 10 = 9
So 19438-60-9 is a valid CAS Registry Number.
InChI:InChI=1S/C9H12O3/c1-5-2-3-6-7(4-5)9(11)12-8(6)10/h5-7H,2-4H2,1H3

19438-60-9 Well-known Company Product Price

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  • Alfa Aesar

  • (B23328)  4-Methyl-1,2-cyclohexanedicarboxylic anhydride, mixture of isomers, 98%   

  • 19438-60-9

  • 100g

  • 400.0CNY

  • Detail
  • Alfa Aesar

  • (B23328)  4-Methyl-1,2-cyclohexanedicarboxylic anhydride, mixture of isomers, 98%   

  • 19438-60-9

  • 500g

  • 1035.0CNY

  • Detail
  • Sigma-Aldrich

  • (08483)  Hexahydro-4-methylphthalicanhydride,mixtureofcisandtrans  analytical reference material

  • 19438-60-9

  • 08483-100MG

  • 553.41CNY

  • Detail
  • Aldrich

  • (149934)  Hexahydro-4-methylphthalicanhydride,mixtureofcisandtrans  96%

  • 19438-60-9

  • 149934-25G

  • 470.34CNY

  • Detail
  • Aldrich

  • (149934)  Hexahydro-4-methylphthalicanhydride,mixtureofcisandtrans  96%

  • 19438-60-9

  • 149934-500G

  • 810.81CNY

  • Detail
  • Aldrich

  • (149934)  Hexahydro-4-methylphthalicanhydride,mixtureofcisandtrans  96%

  • 19438-60-9

  • 149934-3KG

  • 7,189.65CNY

  • Detail

19438-60-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 11, 2017

Revision Date: Aug 11, 2017

1.Identification

1.1 GHS Product identifier

Product name 5-methyl-3a,4,5,6,7,7a-hexahydro-2-benzofuran-1,3-dione

1.2 Other means of identification

Product number -
Other names 5-Methyl hexahydro-1,3-isobenzofurandione

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:19438-60-9 SDS

19438-60-9Related news

DABCO- and DBU-intercalated α-zirconium phosphate as latent thermal catalysts in the copolymerization of glycidyl phenyl ether (GPE) and Hexahydro-4-methylphthalic anhydride (cas 19438-60-9) (MHHPA)08/17/2019

The latent catalytic abilities of tertiary amines-intercalated α-zirconium phosphate [(α-ZrP·amine): 1,4-diazabicyclo[2,2,2]octane (α-ZrP·DABCO) and 1,8-diazabicyclo[5,4,0]undec-7-ene (α-ZrP·DBU)] were examined by copolymerization of glycidyl phenyl ether (GPE) and hexahydro-4-methylphtha...detailed

19438-60-9Relevant articles and documents

PREPARATION OF A LIQUID CURING AGENT FOR EPOXY COMPOSITES OF ISOMETHYLTETRAHYDROPHTHALIC ANHYDRIDE

Dokuchaeva, T. G.,Sibarov, D. A.,Lezdin, S. Yu.,Silin, A. A.

, p. 2605 - 2608 (2007/10/02)

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PREPARATION OF METHYLPHTHALIC ANHYDRIDE BY DEHYDROHYDROGENATION

Lezdin, S. Yu.,Sibarov, D. A.,Dokuchaeva, T. G.,Proskuryakov, V. A.

, p. 2278 - 2281 (2007/10/02)

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CATALYTIC CONVERSIONS OF METHYLTETRAHYDROPHTHALIC ANHYDRIDE.

Lezdin,Dokuchaeva,Sibarov,Panfilova,Proskuryakov

, p. 136 - 138 (2007/10/21)

Methyltetrahydrophthalic anhydride (MTHPA) and mixtures of its isomers are among the widely used intermediates for production of polyester and epoxy resins. Information on methods of production of MHHPA and MPA (methylpthalic anhydride) is confined to a few patents. The possibility of obtaining them from MTHPA by hydrogenation and dehydrogenation respectively is of interest. Experimental evidence shows that alumina-palladium catalyst with a palladium content of 5. 0 mass % has the highest activity and selectivity in synthesis of 4-MPA. The yield of 4-MPA under the optimal conditions found is 60-61% on the converted feed, with 100% conversion. Alumina-palladium catalyst with a palladium content of 3. 0 mass % has the highest activity and selectivity in synthesis of 4-MHHPA. Under the optimal conditions found the yield of 4-MHHPA is 75-80% on the converted feed, with 100% conversion.

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