Tetrakis(hydroxymethyl)phosphonium chloride

Density

Administrative data

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

January to July 2010

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP study, performed according to standard method.

Cross-reference

Reason / purpose for cross-reference:

reference to same study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2010

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

pycnometer method

Test material

Test material information

Constituent 1

Reference substance name:

Tetrakis(hydroxymethyl)phosphonium chloride

EC Number:

204-707-7

EC Name:

Tetrakis(hydroxymethyl)phosphonium chloride

Cas Number:

124-64-1

Molecular formula:

C4H12O4P.Cl

IUPAC Name:

tetrakis(hydroxymethyl)phosphonium chloride

Results and discussion

Density

Type:

relative density

Density:

1 368 kg/m³

Temp.:

20 °C

Remarks on result:

other: mean of two runs

Any other information on results incl. tables

Table 1 : Determining the Density of the Immersion Liquid

Mass of Empty Pycnometer (g)	20.19	Volume of Pycnometer (ml)	25.0
Mass water & Pycnometer (g)	44.86	Density of Water (kg/m3)	0.987
Mass of IL & Pycnometer (g)	44.12	MassILin Pycnometer (g)	23.93
Calculated Density of IL (g/cm3)	0.957	Density of IL (kg/m3)	957

 

Equation 1 (Calculation for the density of water)

Mass of water / volume of pycnometer = Density of water

 

Equation 2 (Calculation for the density of immersion liquid)

ρIL = ( mIL/ mW ) x ρW,t

Where:

mIL is the mass of the immersion liquid

mW is the mass of water

ρW,tis the density of water at temperaturet

 

Calculated value for the density of immersion liquid = 957 kg.m-3 @ 20°C

Table 2: Determining the Density of the Sample

Run Number	1	2
Mass of Empty Pycnometer (g)	20.95	20.95
Mass of Sample & Pycnometer (g)	41.39	39.93
Mass of Sample added to empty Pycnometer (g)	20.44	18.98
Mass of Sample, Pycnometer & immersion liquid	51.07	50.53
Mass of immersion liquid added (g)	9.68	10.60
Calculated Density of Sample(g/cm3)	1.373	1.363
Density of Sample (kg/m3)	1373	1363

 

Mean of the 2 runs: 1368 kg/m³

Equation 3 (Calculation for the density of the sample)

ρS,t = (msρIL) / m1 – m2

Where:

ms is the mass, in grams, of the sample;

m1 is the mass, in grams, of immersion liquid required to fill the pycnometer;

m2 is the mass, in grams of immersion liquid required to fill the pycnometer

containing the specimen;

ρIL is the density of the immersion liquid (as determined by equation 1)

Applicant's summary and conclusion

Conclusions:

Using the pycnometer method, under GLP and in accordance with A3 test method (EC 440/2008), THPC has a relative density of 1368 kg.m-3 at 20°C.