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Environmental fate & pathways

Additional information on environmental fate and behaviour

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Administrative data

Endpoint:
additional information on environmental fate and behaviour
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
1 November 2001
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study not conducted according to international standard guidelines. Study GLP compliant. No details on purity of test substance.

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2002

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: protocol number A.OL.S.026
Deviations:
not specified
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
Sodium hydroxide
EC Number:
215-185-5
EC Name:
Sodium hydroxide
Cas Number:
1310-73-2
Molecular formula:
HNaO
IUPAC Name:
sodium hydroxide
Details on test material:
- Name of test material (as cited in study report): sodium hydroxide
- Other: 0.1 mol/l solution, Baker art.no. 7098. The concentration of the sodium hydroxide titrant was not determined, as the 0.1 mol/l solution was not biased by more than 1% from the nominal value

Results and discussion

Any other information on results incl. tables

 InitialconcentrationHCO3- (mg/L)  Final pH Concentration NaOH needed to obtain thefinal pH value (mg/L)
 % of the calculatedconcentration
   Calculated Measured  

20

9.2 1.5 20 130 %
20 11.0 50.8 50.8 100 %

20

12.0 413 460 111 %
106 9.1 4.4 4.4 100 %
106 11.0 97.3 98.0 101 %
106 12.0 468 536 115 %
195 9.1 7.6 6.0 78.9 % 
195 11.0 146 154 105 %
195 12.0  525 648 123 %

Applicant's summary and conclusion