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Water solubility

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water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
no guideline followed
Principles of method if other than guideline:
Spectrometry of the aqueous extract from the test item
GLP compliance:
Type of method:
other: spectrometry
Specific details on test material used for the study:
- Lot/batch No.:407940
Key result
Water solubility:
ca. 75 mg/L
Remarks on result:
other: mean value of the 2 tests.

Concentration of the test item in the aqueous extract


1 g of test item

0.25 g of test item


0.45 µm

0.45 µm

Dilution Factor



Result of the spectrometric analysis


(Spectro DU640


DOmeasuredat 425 nm = 0.3412 within the matrix [methanol-water 50/50]

DOmeasuredat 427 nm = 0.3093 within the matrix [methanol-water 50/50]

Calculated Concentration of reference

Concref= 19.48 mg/L

Concref= 19.48 mg/L

DO of reference

DOrefat 426 nm = 0.8381

DOrefat 426 nm = 0.8381

Quantity of MG-F in water

=79 mg/L

=72 mg/L

Mean of the 2 tests

75 mg/L

The solubilty of the test item in water is 75 mg/L by spectrometry.

Description of key information

Solubility measured by spectrometry

Key value for chemical safety assessment

Water solubility:
75 mg/L
at the temperature of:
22 °C

Additional information