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Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2017
Report date:
2017

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Spectrophotometry of the aqueous extract from the powder
GLP compliance:
no
Type of method:
other: spectrophotometry

Test material

Constituent 1
Chemical structure
Reference substance name:
Trihydrogen [29H,31H-phthalocyaninetrisulphonato(5-)-N29,N30,N31,N32]cuprate(3-), compound with N,N'-di(o-tolyl)guanidine (1:3)
EC Number:
277-086-3
EC Name:
Trihydrogen [29H,31H-phthalocyaninetrisulphonato(5-)-N29,N30,N31,N32]cuprate(3-), compound with N,N'-di(o-tolyl)guanidine (1:3)
Cas Number:
72928-60-0
Molecular formula:
C32H16-τN8Cu(SO3C15H18N3)τ
IUPAC Name:
Bis and tris and tetra [N-(2-methylanilino)-N’-(2-methylanilino) methaniminium][phthalocyaninesulfonato-κ4N29,N30,N31,N32]cuprate(II)
Test material form:
solid: particulate/powder

Results and discussion

Water solubility
Key result
Water solubility:
ca. 774 mg/L
Conc. based on:
test mat. (dissolved fraction)
Loading of aqueous phase:
1 other: g/100 g
Temp.:
25 °C
Remarks on result:
other: pH not mentionned in the study

Any other information on results incl. tables

Results

 

1 g of powder

Visual aspect of the testing solution before dilution

Very dark blue

 

Filtration

Porosity of 0,45 µm

Factor of dilution

100

Spectrometry results:

(Cary 60 Agilent – Xenon lamp)

DO at 344 nm = 0.3640 u.Abs

DO at 669 nm = 0.7899 u.Abs

Calculated DO

DO at 344 nm = 36.40 u.Abs

DO at 669 nm = 78.99 u.Abs

DO of reference

(Concref=6.887 mmg/L)

DOrefat 345 nm = 0.3116 u.Abs

Dorefat 669 nm = 0.7026 u.Abs

Calculated

Concentration in water

At 344 nm = 805 mg/L

At 669 nm = 774 mg/L

 

At 344 nm = secondary peak

At 668 nm = main peak

Applicant's summary and conclusion

Conclusions:
The water solubility of the subtance is 774 mg/L.
Executive summary:

By spectrophotometry, the water solubility is 774 mg/L.

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