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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
09 March 2016 to 20 July 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
thermal analysis

Test material

Constituent 1
Chemical structure
Reference substance name:
N-2-hydroxyethylacetamide
EC Number:
205-530-8
EC Name:
N-2-hydroxyethylacetamide
Cas Number:
142-26-7
Molecular formula:
C4H9NO2
IUPAC Name:
N-2-hydroxyethylacetamide
Test material form:
liquid

Results and discussion

Melting / freezing point
Key result
Melting / freezing pt.:
0.5 °C
Atm. press.:
1 atm
Remarks on result:
other: Result: Freezing temperature of 0.5 ± 1.0 °C (273.7 ± 1.0 K)

Any other information on results incl. tables

Determination 1:

Time (s) Temperature (°C) Time (s) Temperature (°C) Time (s) Temperature (°C)
0 35.0 960 -1.0 1920 0.5
30 34.0 990 -1.5 1950 0.5
60 33.0 1020 -2.0 1980 1.0
90 32.0 1050 -2.5 2010 1.0
120 31.0 1080 -3.5 2040 1.0
150 29.0 1110 -4.0 2070 1.0
180 28.0 1140 -5.0 2100 1.0
210 26.0 1170 -5.5 2130 0.0
240 25.0 1200 -6.0 2160 -0.5
270 24.0 1230 -6.5 2190 -0.5
300 23.0 1260 -7.0 2220 -0.5
330 21.5 1290 -7.5 2250 -0.5
360 20.0 1320 -8.0 2280 -0.5
390 19.0 1350 -9.0 2310 -0.5
420 17.5 1380 -9.5 2340 -0.5
450 16.0 1410 -9.5 2370 -0.5
480 15.0 1440 -10.0 2400 -1.0
510 13.5 1470 -10.5 2430 -1.0
540 12.0 1500 -11.0 2460 -1.0v
570 11.0 1530 -11.0 2490 -1.5
600 10.0 1560 -11.5 2520 -2.0
630 8.5 1590 -11.5 2580 -2.5
660 7.5 1620 -10.0 2610 -2.5
690 6.0 1650 -8.5 2640 -3.0
720 5.0 1680 -6.0 2670 -3.5
750 4.5 1710 -4.0 2700 -4.0
780 3.5 1470 -2.0 2730 -4.0
810 2.0 1770 -2.0 2760 -4.5
840 1.0 1800 -1.0 2790 -5.0
870 0.5 1830 -0.5 --- ---
900 0.0 1860 -0.5 --- ---
930 -0.5 1890 0.5 --- ---

Result: Freezing temperature of 1.0 °C (274.2 K)

Determination 2:

Time (s) Temperature (°C) Time (s) Temperature (°C) Time (s) Temperature (°C)
0 35.0 630 4.0 1260 -9.0
30 34.0 660 3.5 1290 -4.0
60 33.0 690 2.0 1320 -3.0
90 32.0 720 1.5 1350 -2.0
120 30.0 750 0.0 1380 -0.5
150 29.0 780 -0.5 1410 0.0
180 27.0 810 -1.5 1440 0.0
210 25.0 840 -2.0 1470 0.0
240 22.0 870 -2.5 1500 0.0
270 20.5 900 -3.0 1530 -0.5
300 18.0 930 -3.5 1560 -0.5
330 16.0 960 -4.0 1590 -0.5
360 14.0 990 -5.0 1620 -1.0
390 12.0 1020 -5.5 1650 -1.5
420 11.0 1050 -6.0 1680 -2.0
450 9.5 1080 -6.5 1710 -3.0
480 9.5 1110 -7.0 1470 -3.5
510 8.0 1140 -8.0 1770 -4.0
540 7.0 1170 -9.0 1800 -4.5
570 6.0 1200 -9.0 1830 -5.0
600 5.0 1230 -9.5 --- ---

Result: Freezing temperature of 0.0 °C (273.2 K)

Applicant's summary and conclusion

Conclusions:
The freezing point of the test item has been determined to be 0.5 ± 1.0 °C (273.7 ± 1.0 K).
Executive summary:

Freezing temperature of 0.5 ± 1.0 °C (273.7 ± 1.0 K) using the crystallizing point method, designed to be compatible with Method A.1 Melting/Freezing Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 102 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.