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Physical & Chemical properties

pH

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Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Study period:
15/2/2016 - 15/2/2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed using standard OECD test guidelines

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report Date:
2016

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 122 (Determination of pH, Acidity and Alkalinity)
Principles of method if other than guideline:
The pH determination of test item 1,2-benzisothiazol-3(2H)-one 1,1-dioxide, sodium salt (CAS No. 128-44-9) was done as per the test guideline OECD 122, with the help of pH electrode of digital pH meter.
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: crystalline
Details on test material:
- Name of test material (as cited in study report): 1,2-benzisothiazol-3(2H)-one 1,1-dioxide, sodium salt
- Substance type: Organic
- Physical state: solid
Specific details on test material used for the study:
- Name of test material: 1,2-benzisothiazol-3(2H)-one 1,1-dioxide, sodium salt
- IUPAC name: 1,2-Benzisothiazol-3(2H)-one 1,1-dioxide, sodium salt
- Molecular formula: C7H4NNaO3S
- Molecular weight: 205.169 g/mole
- Smiles: c12c(C(=O)[NH-]S1(=O)=O)cccc2.[Na+]
- InChI: 1S/C7H5NO3S.Na/c9-7-5-3-1-2-4-6(5)12(10,11)8-7;/h1-4H,(H,8,9);/q;+1/p-1
- Substance type: organic
- Physical state: Solid crystalline powder (white)
- Purity: 99.66%

Reagents

Reagent:
water

Results and discussion

pH value
Key result
pH value:
6.49
Temp.:
29 °C
Remarks on result:
other: 1% w/v aqueous solution of the test item

Any other information on results incl. tables

TEST RESULTS

Method Details

Observations

Remarks if, any

Guideline

OECD 122

 

 

Method

 

Digital pH meter

 

Principle of method

The pH of an aqueous solution or dispersion in water is determined with a pH measurement interface equipped with an appropriate electrode system.

 

Temperature of 1% w/v test solution

-

29 °C

pH (RESULT)

 

-

6.49

Inference

1.   Acidic

2.   Basic

3.   Neutral

 

Acidic

Applicant's summary and conclusion

Conclusions:
The pH of 1% w/v aqueous solution of the test item 1,2-benzisothiazol-3(2H)-one 1,1-dioxide, sodium salt (CAS No. 128-44-9) was 6.49 at 29 °C .
Executive summary:

The pH determination of test item1,2-benzisothiazol-3(2H)-one 1,1-dioxide, sodium salt (CAS No. 128-44-9) was done following OECD guideline 122. pH of 1% w/v aqueous solution was measured with the help of pH meter and it was observed to be 6.49 at 29 °C.