1,1,1"((methylsilanetriyl)tris)(oxy))tris(2-methylpropan-2-amine)

Density

Link to relevant study record(s)

Reference

Endpoint:

density, other

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

Experimental test result performed using standard test guidelines

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

GLP compliance:

no

Type of method:

pycnometer method

Key result

Type:

density

Density:

0.96 g/cm³

Temp.:

20 °C

The mean density of liquid test chemical is determined by recording weights of empty pycnometer and apparent weight of test chemical and water at required test temperature of 20 °C with respective atmospheric pressure. The density is calculated using Buoyancy correction value. The readings are taken in replicate and mean density is reported.

Sr No	Method Details		Observed Values
			1st Observation	2nd Observation
1	Test temperature	(°C)	20	20
2	Atmospheric pressure	(hPa)	980.1	978.9
3	Weight of empty dry pycnometer(X)	g	29.866	29.329
4	Weight of pycnometer + test chemical(Y)	g	77.503	76.989
5	Apparent mass of test chemical(M1)	(M1 = Y - X)	47.637	47.660
6	Weight of pycnometer +  water(Z)	g	79.554	79.177
7	Apparent mass  of water(M2)	(M2  = Z - X)g	49.688	49.848
8	Buoyancy correction(A)	A=(*ρat × M2)	0.058	0.058
9	Density of water at test temperature (Refer Annex 1 of SOP no…..)	g/cm3 (ρtw)	0.9982	0.9982

ρat=density of air at 27°C and 760 mm Hg pressure= 0.001168 g/cm3

CALCULATIONS

For liquids:

Density = (M₁+A)  X   ρ_tw

                   (M₂₊A)

1^stcalculated density =( 47.637 + 0.058)  X  0.9982

                                     (49.688 + 0.058)

                                    = 0.9570 g/cm³

2^ndcalculated density =(47.660 + 0.058)  X  0.9982

                                     (49.848 + 0.058)

                                 =  0.9543 g/cm³

Average density = (0.95704476741849 + 0.9543855721393)  /   2

1^stcalculated density	2^ndcalculated density
0.95704476741849	0.9543855721393
Average density	=0.96 g/cm^3

 

Where,

M₁= Apparent mass of test chemical

M₂= Apparent mass of water

A = Buoyancy correction (0.001168 g/cm³, when density of air at 27°C and 760 mm Hg pressure)

 ρ_tw= Density of water at test temperature(Refer Annex 1 of SOP no.001.)

Conclusions:

The density of test substance is 0.96 g/cm3at 20 °C and 979.5 hPa.

Executive summary:

The density of test item was determined following OECD Guideline 109 and according to the Indian standard method for determination of density of liquids [IS 4730:1994 (Reaffirmed 2010) using glass pyknometer. The density of test substance was determined to be 0.96 g/cm³at 20 °C and 979.5 hPa

Description of key information

The density of test substance was determined to be 0.96 g/cm³at 20 °C and 979.5 hPa

Key value for chemical safety assessment

Relative density at 20C:

0.96

Additional information

The density of test item was determined following OECD Guideline 109 and according to the Indian standard method for determination of density of liquids [IS 4730:1994 (Reaffirmed 2010) using glass pyknometer. The density of test substance was determined to be 0.96 g/cm³at 20 °C and 979.5 hPa