Sodium phosphinate

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

other information

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

other: Documentation insufficient for assessment. No guideline followed, no data on test method nor GLP only the apparatus used was cited.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1998

Report date:

1998

Materials and methods

Test guideline

Qualifier:

no guideline followed

Principles of method if other than guideline:

capillary and accredited thermometer were used
no more data

GLP compliance:

not specified

Test material

Test material information

Constituent 1

Reference substance name:

Sodium phosphinate

EC Number:

231-669-9

EC Name:

Sodium phosphinate

Cas Number:

7681-53-0

Molecular formula:

H3O2P.Na

IUPAC Name:

sodium phosphinate

Details on test material:

- Name of test material: liquid sample, hypophosphite de sodium 810 g/L
- Lot/batch No.: 7 samples from different batches have been used
for details see table 1 in the Results freetext
- Sample concentrations : 810 g/L (commercial concentration)

Results and discussion

Boiling point

Boiling point 1

Boiling pt.:

> 113 - < 114 °C

Remarks on result:

other: solutions at 810 g/L (6 replicates: average at 113.5 °C)

Boiling point 2

Boiling pt.:

106

Remarks on result:

other: solution at 50%

Any other information on results incl. tables

Table 1: details of the measured boiling points

Name	Sample designation	Number of lot	Boiling point +/- 1 (°C)
Sodium hypophosphite 810 g/L	L1	97-51	114
	L2	97-53	114
	L3	98-2	113
	L4	98-17	114
	L5	98-18	113
	L6	98-19	113
H3PO2, 50%	L11	nd	106

nd : no data

Applicant's summary and conclusion

Conclusions:

In the test conditions, the boiling point of solution of sodium hypophosphite is between 113°C and 114°C (average 113.5 °C)

Executive summary:

Boiling point of solution of sodium hypophosphite (i.e. hypophosphorous acid solutions) was measured with an accredited thermometer and a capillary. 6 lots at commercial concentration of 810 g/L have been tested plus an additional sample at a concentration of 50%.

No more data are given in the study report.

Boiling point was measured between 113 and 114 °C (average at 113.5) at 810 g/L and at 106 °C at 50% concentration.

As documentation is insufficient for assessment this study is considered as not assignable.