[No public or meaningful name is available]

Water solubility

Administrative data

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From December 12, 2018 to March 6, 2019

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2019

Report date:

2019

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: HJ/T 153-2004 “The Guidelines for the Testing of Chemicals, Physical-Chemical Properties and Physical Hazards”, the second version, No.105 (OECD Guidelines for Testing of Chemicals No.105 "Water solubility").

GLP compliance:

yes (incl. QA statement)

Type of method:

flask method

Test material

Test material information

Constituent 1

Reference substance name:

Sulfonic acids, C16-alkane hydroxy and C16-alkene, potassium salts

Cas Number:

2210238-42-7

IUPAC Name:

Sulfonic acids, C16-alkane hydroxy and C16-alkene, potassium salts

Test material form:

solid

Remarks:

This solid sample was obtained from the original liquid form by removing water.

Details on test material:

CAS number: 2210238-42-7

Specific details on test material used for the study:

-Storage conditions
Store container tightly closed in well-ventilated place. Store in corrosive resistant container with a resistant inliner. Store locked up. Don't store with acids.

-Test item stability under storage conditions
Stable in container after opening. Stable in water and in light. Stability in soil is not applicable.

Results and discussion

Water solubility

Key result

Water solubility:

359.18 g/L

Conc. based on:

act. ingr.

Incubation duration:

24 - 72 h

Temp.:

20 °C

pH:

9.92 - 10.03

Any other information on results incl. tables

Test Results

The clarify water phase of samples with different equilibrium time was taken to determine by the analysis method. The results showed that the water solubility of C16K was 359.18 g・L^-1, as shown in Table 3.

 

Table 3 　Results of water solubility test with C16K

Added amount (g)	Equilibrium time	pH	Weight of weighed supernatant m (g)	Measured concentrations ci (µg・mL^-1)	Volume　V(mL)	Dilute times	Actual concentrations (g・L^-1)	Average solubility (g・L^-1)
40.16	24h	9.98	0.01847	66.10	100	1000	357.88	359.18
40.57	48h	10.03	0.02020	74.42	100	1000	368.42
39.96	72h	9.92	0.01838	64.56	100	1000	351.25

Applicant's summary and conclusion

Conclusions:

The water solubility of the registered substance was determined to be 359.18 g/kg at 20ºC. The pH of the aqueous solution was 9.92-10.03.

Executive summary:

-Objective

The aim was to determine solubility of C16K in water, and being an important parameter for the environmental assessment.

 

-Test guideline

HJ/T 153-2004 “The Guidelines for the Testing of Chemicals, Physical-Chemical Properties and Physical Hazards”, the second version, No.105 (OECD Guidelines for Testing of Chemicals No.105 "Water solubility").

 

-Test method

Flask method was used in this test.

 

-Results

The water solubility of C16K was 359.18 g/kg at 20ºC. The pH of the aqueous solution was 9.92-10.03.