Registration Dossier

Physical & Chemical properties

Flash point

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Administrative data

Endpoint:
flash point
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study was done with an aqueous suspension.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2012
Report Date:
2012

Materials and methods

Principles of method if other than guideline:
ASTM D93-02, “Standard Test Methods for Flash Point by Pensky-Martens Closed Tester,” Method ‘B’, using a Petrolab Model PMA-4 automated tester.
Type of method:
closed cup

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Purity: 22.82% solids in water

Results and discussion

Flash point
Remarks on result:
other: No flash point up to a temperature of 70 °C, at which significant refluxing and foaming of the liquid occurred.

Applicant's summary and conclusion

Conclusions:
No flash point for the liquid test substance was obtained up to a temperature of 70°C, at which significant refluxing and foaming of the liquid occurred.
Executive summary:

Flash point tests were conducted according to ASTM D93-02, “Standard Test Methods for Flash Point by Pensky-Martens Closed Tester,” Method ‘B’, using a Petrolab Model PMA-4 automated tester. The suspension was gently stirred in its shipping bottle until visual inspection showed that all solids had been suspended throughout the body of the liquid. 75 cc of this liquid was then poured into a brass test cup which was then covered with a snug-fitting lid containing a trap door. The liquid was stirred and its temperature increased at a controlled rate of approximately 1.3°C/min. In this case an agitator speed of 250 rom was used to maintain a homogeneous solids suspension. A hot-wire ignitor was inserted into the vapor space of the cup through the trap door every 1°C and a fine wire thermocouple just above the liquid surface and diametrically opposed to the ignitor was used to detect whether a flash occurred. Reference tests on n-dodecane were conducted at the beginning of the test program.

The n-dodecane reference flash point of 83°C was found to be within acceptable limits. No flash point was obtained for the test substance up to a temperature of 70°C, at which significant refluxing and foaming of the liquid occurred.