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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
22-25 February 2010
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: The study was not carried out using GLP. The results were carried out once on one sample, and the results were as expected.
Qualifier:
according to guideline
Guideline:
other: ISO 11357-2
Deviations:
no
Principles of method if other than guideline:
A small sample of the epoxy resin was placed in a small capsule. The temperature of the sample was scanned versus an empty capsule. The difference in the heat required to increase the temperature of a sample and reference was measured as function of temperature was used to determine the glass transition temperature of the resin.
GLP compliance:
no
Type of method:
thermal analysis
Melting / freezing pt.:
ca. -16 °C
Remarks on result:
other: The measurement was carried out on this substance using thermal analysis - a differential scanning calorimeter (DSC). The melting point is a glass transition temperature (Tg).

Sample                                                                                              Mass, mg              Tg, °C

4,4'-Isopropylidenediphenol, oligomeric reaction products with                     11.43                    -16

1 -chloro-2,3 -epoxypropane, CETA 4/10(IPDP)

 

Conclusions:
The glass transition temperature (Tg) of EPIKOTE 828-LVEL was measured by differential scanning calorimetry and found to be -16°C.
Executive summary:

A typical product EPIKOTE(TM) 828 -LVEL described using EC number 500 -033 -5 is not a pure substance and therefore does not have a freezing point. Thermal analysis was carried out on this typical product and the glass transition temperature was found to be -16°C.

Description of key information

The substance 4,4'-Isopropylidenediphenol, oligomeric reaction products with 1-chloro-2,3-epoxypropane (EC No. 500-033-5) has a variable molecular weight range. The majority of the substance is a viscous liquid with a glass transition temperature (Tg) of ca. -16°C. 

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-16 °C

Additional information

The substance 4,4'-Isopropylidenediphenol, oligomeric reaction products with 1-chloro-2,3-epoxypropane (EC No. 500-033-5) has a variable molecular weight range. The majority of the substance is a viscous liquid with a glass transition temperature (Tg) of ca. -16°C. During storage crystallization of the diglycidyl ether of bisphenol-A often occurs. Bisphenol-A diglycidyl ether melts at a temperature between 30 and 50°C.