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Diss Factsheets

Physical & Chemical properties

Density

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Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
14 Dec 2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)
GLP compliance:
yes (incl. QA statement)
Remarks:
Hessisches Ministerium für Umwelt, Energie, Jugend, Familie und Gesundheit, Wiesbaden, Germany
Type of method:
air comparison pycnometer (for solids)
Remarks:
gas used: helium
Type:
density
Density:
1.52 g/cm³
Temp.:
20 °C
Type:
relative density
Density:
1.52 other: unitless
Temp.:
20 °C

The relative density compared to water at 4 °C is 1.52.

Two test series with different weights of Imidacloprid (NTN 33893, AE F106464), technical substance, a white powder, were carried out in helium gas at 20 °C. To ensure the complete purging and thermal equilibration of the system the first five measurements of each experiment were excluded from evaluation. For averaging only the results of the last ten measurements were used.

Measurement no.

Experiment 1, weight 0.78323 g

Experiment 2, weight 0.78310 g

Volume (cm³)

Density (g/cm³)

Volume (cm³)

Density (g/cm³)

1

0.5106

1.5340

0.5116

1.5308

2

0.5124

1.5286

0.5130

1.5266

3

0.5134

1.5256

0.5145

1.5222

4

0.5144

1.5226

0.5147

1.5216

5

0.5150

1.5209

0.5153

1.5198

6

0.5150

1.5207

0.5152

1.5200

7

0.5158

1.5185

0.5159

1.5178

8

0.5162

1.5174

0.5162

1.5170

9

0.5163

1.5169

0.5164

1.5164

10

0.5166

1.5162

0.5169

1.5149

11

0.5166

1.5161

0.5171

1.5145

12

0.5164

1.5168

0.5173

1.5137

13

0.5170

1.5151

0.5175

1.5133

14

0.5166

1.5160

0.5173

1.5140

15

0.5167

1.5157

0.5178

1.5125

Mean (mes. 6-15)

-

1.5169

-

1.5154
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
14 Dec 2015
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)
GLP compliance:
yes
Type of method:
pycnometer method
Remarks:
with attached graduated tube for variable filling heights
Type:
density
Density:
1.41 g/cm³
Temp.:
20 °C
Type:
relative density
Density:
1.41 other: unitless
Temp.:
20 °C

Description of key information

1.52 g/cm³ at 20 °C (OECD 109, EU A.3, gas comparison pycnometer)

Key value for chemical safety assessment

Relative density at 20C:
1.52

Additional information

The density of the substance was also determined according to OECD Guideline 109 and EU Method A.3 using the pycnometer method. The result was lower: 1.41 g/cm³ at 20 °C.