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Physical & Chemical properties

Boiling point

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boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods with acceptable restrictions
according to guideline
other: OECD 113 (TGA)
GLP compliance:
Type of method:
differential scanning calorimetry
Key result
The physical modification of the substance starts at 240° even if the real decomosition is measured at 270°ing
Decomp. temp.:
ca. 270 °C
Remarks on result:
other: measured by DSC

experimental set-up:

Parameter Value Instrument Hitachi STA 7200

Gas (flow) Air (200 mL min-1)

Initial temper.(°C) 30

Final temper.(°C) 460

Temper. Gradient (°C min-1) 10

Pan material Al (open)

Balance resolution (mg) ±0.001

Sample weight (mg) 9.307

Pressure ~ 0.1 MPa

The substance Butanedioic acid, 2,3-dihydroxy- [R-(R*,R*)]-, C12-13-branched alkyl esters shows a modification of the physical properties at 240°, no boiling point below. The decomposition of the substance has been determined at 270°C by DSC technique.

Description of key information

The measuerment of the boiling point can not be determined because the substance Butanedioic acid, 2,3-dihydroxy-[R-(R*,R*)]-, C12-13-branched alkyl esters decomposes at 270°C

Key value for chemical safety assessment

Additional information