Registration Dossier

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
explosiveness
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
key study
Study period:
27 February 2012
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Follows sounds scientific evaluation based on structure.
Qualifier:
no guideline followed
Principles of method if other than guideline:
The oxygen balance is calculated from the empirical formula of the compound in percentage of oxygen required for complete conversion of carbon to carbon dioxide and hydrogen to water.
GLP compliance:
no
Parameter:
other: More sensitive to shock than m-dinitrobenzene
Remarks:
migrated information
Remarks on result:
other: no data
Parameter:
other: More sensitive to friction than m-dinitrobenzene
Remarks:
migrated information
Remarks on result:
other: no data
Parameter:
other: Explosive under influence of flame
Remarks:
migrated information
Remarks on result:
other: no data
Parameter:
other: Explosive (not specified)
Remarks:
migrated information
Remarks on result:
negative (not further specified)

The oxygen balance value is a greater positive than -200, suggesting that the substance may be potentially explosive, but this takes no account of the largely dissociated nature of the substance. In addition, the substance does not contain any groups which are a known structural alert for explosivity therefore, on the basis of structure, bismuth subnitrate is considered not to have the potential to be explosive. Therefore, in accordance with Column 2 adaptation statement of REACH Annex VII, information requirement section 7.11, an explosivity study does not need to be conducted.

Structural group evaluation:

Group

Identity

Present?

Colour Identifier

-O-O-

Inorganic and organic peroxides

No

 

R-C(O)C-R

Epoxides

No

 

-O-O-O-

Inorganic and organic Ozinides

No

 

-OClO2

Inorganic and organic chlorates

No

 

-OClO3

Inorganic and organic perchlorates

No

 

-N-X2

Where X is a halogen

No

 

R-ON=O-ONO2

Inorganic and organic nitro compounds 

No

 

R-N=O, R2-N-N=O

Inorganic and organic nitroso compounds 

No

 

-N=N-

Azo

No

 

R-N2

Diazo

No

 

-N=N=N-

Azides

No

 

R-N=N-N=N-R

Tetrazole

No

 

R-N=N-N-R

Triazene

No

 

.-C=N-O-M

Fulminates

No

 

R-C≡C- , -C≡C-M

Acetylene and metal acetylides

No

 

M-C

Metal alkyl

No

 

Based on structural groups, is the substance potentially explosive?

NO

Oxygen balance calculation for bismuth subnitrate. Molecular formula: Bi5H9N4O22

From Molecular Formula

No of atoms

Atomic weight

Total molecular mass

Carbon

0

12.011

0

Hydrogen

9

1.0079

9.0711

Oxygen

22

15.9994

351.9868

Nitrogen

4

14.0067

56.0268

Sulphur

0

32.06

0

Fluorine

0

18.998403

0

Chlorine

0

35.453

0

Bromine

0

79.904

0

Iodine

0

126.9045

0

Phosphorus

0

30.97376

0

 

 

MW of Metal

 

Bismuth

5

208.98038

1044.9019

Substance Molecular Weight

1461.9866

Oxygen Balance (%) =

13.68

Potentially Explosive based on OB greater than -200?

Yes

Interpretation of results:
non explosive
Remarks:
Migrated information
Conclusions:
Calculation based on structure and oxygen balance was carried out and determined that the substance was not potentially explosive. In accordance with EU-REACH regulations no further study needs to be carried out.
Executive summary:

The oxygen balance value is a greater positive than -200, suggesting that the substance may be potentially explosive, but this takes no account of the largely dissociated nature of the substance. In addition, the substance does not contain any groups which are a known structural alert for explosivity therefore, on the basis of structure, bismuth subnitrate is considered not to have the potential to be explosive. Therefore, in accordance with Column 2 adaptation statement of REACH Annex VII, information requirement section 7.11, an explosivity study does not need to be conducted.

Description of key information

Bismuth subnitrate is non explosive

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

Calculation based on structure and oxygen balance was carried out and determined that the substance was not potentially explosive. In accordance with EU-REACH regulations no further study needs to be carried out.

Justification for classification or non-classification

The test item has been shown to have no explosive properties therefore the substance is not classified.