Tetrabutyltin

Melting point / freezing point

Link to relevant study record(s)

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

30 June 2004 to 21 August 2004

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

method to determine freezing temperature

Key result

Melting / freezing pt.:

< 253 K

Melting / freezing pt.:

< -20 °C

The determination was carried out in duplicate.

Graphs of temperature (K) versus time (seconds) were constructed to obtain the freezing temperature (attached figures).

Table 1: Cooling Data, Determination 1

Time (s)	Temperature (K)
0 30 60 90 120 150 180 210 240 270 300 330 360 390 420 450 480 510 540 570 600 630 660 690 720 750 780 810 840 870 900 930 960 990 1020 1050 1080 1110 1140 1170 1200 1230 1260 1290 1320 1350 1380 1410 1440 1470 1500 1530 1560 1590 1620 1650	293 291 289 288 287 285 283 281 279 278 276 275 274 273 272 270 269 269 268 268 267 266 266 265 264 264 263 263 262 262 261 261 261 260 260 259 259 258 258 257 257 256 256 256 256 255 255 255 254 254 254 254 253 253 253 253

 

Table 2: Cooling Data, Determination 2 

Time (s)	Temperature (K)
0 30 60 90 120 150 180 210 240 270 300 330 360 390 420 450 480 510 540 570 600 630 660 690 720 750 780 810 840 870 900 930 960 990 1020 1050 1080 1110 1140 1170 1200 1230 1260 1290 1320 1350 1380 1410 1440 1470 1500 1530 1560 1590 1620 1680 1710 1740 1770 1800 1830 1860 1890 1920	295 294 293 292 290 289 288 287 2862 286 284 284 282 281 280 279 278 277 276 275 273 232 271 271 270 269 268 267 267 266 265 264 264 263 262 262 261 261 260 260 260 259 259 259 259 259 258 257 257 256 256 256 255 255 255 254 254 254 254 253 253 253 253 252

Conclusions:

Freezing point is less than 253 ± 0.5 K, using BS4633: Method for the Determination of Crystallizing Point, Method 102 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

Executive summary:

The freezing point of tetrabutyltin was determined using BS4633: Method for the Determination of Crystallizing Point, Method 102 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. The freezing point is less than 253 ± 0.5 K (< -20 °C).

Description of key information

The freezing point of tetrabutyltin was determined to be less than 253 ± 0.5 K (< -20 °C).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

253 K

Additional information

The freezing point of tetrabutyltin was determined using BS4633: Method for the Determination of Crystallizing Point, Method 102 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. The freezing point is less than 253 ± 0.5 K (< -20 °C).