27138-31-4 Usage
Uses
DPGDB may be used as a diluent for the preparation of polysulfone membranes by heat induced phase separation. It finds potential applications in water treatment and food processing. It may also be used as a plasticizer with poly(vinyl) chloride (PVC) for the fabrication of diamond coated PVC.
General Description
Di(propylene glycol) dibenzoate (DPGDB) is a widely used plasticizer that has ether linkages linked with two benzoate groups.
Flammability and Explosibility
Nonflammable
Check Digit Verification of cas no
The CAS Registry Mumber 27138-31-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,1,3 and 8 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 27138-31:
(7*2)+(6*7)+(5*1)+(4*3)+(3*8)+(2*3)+(1*1)=104
104 % 10 = 4
So 27138-31-4 is a valid CAS Registry Number.
InChI:InChI=1/C20H22O5/c1-3-17(24-19(21)15-11-7-5-8-12-15)23-18(4-2)25-20(22)16-13-9-6-10-14-16/h5-14,17-18H,3-4H2,1-2H3
27138-31-4Relevant articles and documents
Process for the manufacture of light colored dipropyleneglycol dibenzoate
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, (2008/06/13)
Process for production of dipropyleneglycol dibenzoate isomer mixture of the formulas: STR1 A crude methyl benzoate containing at least 80 wt.% methylbenzoate, which is a by-product of production of dimethylterephthalate by catalytic oxidation of p-xylene and/or methyl-p-toluate and esterification of the resulting acids with methanol, is contacted with dipropylene glycol commercial isomer mixture in the presence of a catalyst for a transesterification to produce said benzoate. The catalyst is an aluminum alkoxide or an aluminum silicon alkoxide containing the group Al O Si. The product is obtained in good yield, has good color, and is useful as a plasticizer for PVC.
