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Physical & Chemical properties

Water solubility

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Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1998
Report Date:
1998

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
EU Method A.6 (Water Solubility)
Version / remarks:
Cited as Directive 92/69/EEC, A.6
GLP compliance:
no
Type of method:
flask method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid
Specific details on test material used for the study:
- Details on test material: Name of test material (as cited in study report) = Calsil B (today called Sipernat 880);
- Analytical data after ignition: SiO2 91 %; Ca 6% (as CaO); Na 2 % (as Na2O); Al 0.2 % (as Al2O3); loss on ignition (2 h, 1000 °C): 15.0 +-0.1 % (w/w).

Results and discussion

Water solubility
Key result
Water solubility:
ca. 260 mg/L
Temp.:
20 °C
pH:
ca. 9.7
Details on results:
Concentration/loading: 6660 mg/L at 30 °C
The pH was inherent and not adjusted.
The indicated value range is the total of measured elements.

Any other information on results incl. tables

Solubility in water of a calcium silicate at 20 °C, pH 9.7

48 h

72 h

96 h

SiO2 [mg/L]

200 ±10

190 ±10

190 ±10

Na+  [mg/L ]

61 ±3

60 ±3

60 ±3

Ca2+ [mg/L]

8.6 ±0.5

9.7 ±0.5

10.7 ±0.6


Overall solubility is about 260 mg/L.

Applicant's summary and conclusion