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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
17/02/2016-17/02/2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed using standard test guidelines
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Principles of method if other than guideline:
The melting point 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 102. The method followed was according to Capillary/metal block.
GLP compliance:
no
Type of method:
other: standard laboratory method
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%
Key result
Melting / freezing pt.:
>= 320.8 - <= 325.3 °C
Atm. press.:
979.9 hPa
Decomposition:
no
Sublimation:
no
Remarks on result:
other: other details not available

Method Details

Observations

Remarks if, any

Guideline

OECD 102

-

 

 

Method

Capillary/metal block

-

Principle of method

The temperature at which a solid becomes a liquid at standard atmospheric pressure

-

Grinding of Test item done

 

Yes

 

Atmospheric pressure

(in hPa)

 

979.9 hPa

Decomposition

 

Decomposition temperature(°C), if applicable

 

No

Sublimation

Sublimation temperature (°C), if applicable

 

 

No

Mean Melting point (°C)

(RESULT)

 

--------

Mean Melting point range (°C), if applicable

 

320.8°C -325.3°C

Conclusions:
The melting point determination of 1,2-benzisothiazol-3(2H)-one 1,1-dioxide, sodium salt (CAS No. 128-44-9)was done following OECD Guideline 102 and according to the Capillary/metal block method. The test was conducted in replicates and mean melting point range was determine to be 320.8°C -325.3°C at 979.9 hPa.
Executive summary:

The melting point determination of Test item1,2-benzisothiazol-3(2H)-one 1,1-dioxide, sodium salt(CAS No. 128-44-9) was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block. The mean melting point range was determine to be 320.8°C -325.3°C at 979.9 hPa.

Description of key information

The melting point determination of Test item1,2-benzisothiazol-3(2H)-one 1,1-dioxide, sodium salt(CAS No. 128-44-9) was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block. The mean melting point range was determine to be 320.8°C -325.3°C at 979.9 hPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
320.8 °C

Additional information

The melting point determination of Test item1,2-benzisothiazol-3(2H)-one 1,1-dioxide, sodium salt(CAS No. 128-44-9) was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block. The mean melting point range was determine to be 320.8°C -325.3°C at 979.9 hPa.

From other reliable sources melting point of chemical 1,2 -benzisothiazol-3(2H)-one 1,1 -dioxide, sodium salt is concluded to be 364.3 Deg C.