Registration Dossier

Administrative data

Endpoint:
flammability
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:

Data source

Materials and methods

Results and discussion

Applicant's summary and conclusion

Executive summary:

Iron trinitrate-9-hydrate is an inorganic salt and consists of ferric cations [Fe(3+)] nitrate anions [NO3(-)] and water (H2O) as hydrate or solvent.

Iron trinitrate is manufactured as aquoues solutions with more than 90% of the quantities manufactured as a solution containing about 58% water. Approximately 10% of the quantities manufactured are the nonahydrate form with about 42% water content. The high water content of both the aqueous solution and the nonahydrate can explain the non- flammable nature of the substance. At no point during the manufacturing does the iron trinitrate exist as the water free option, only in solution or as the nonahydrate salt.

It does not contain carbon (C), hydrocarbon (CH), organic nitro (R2CNO2) ammonium (NH4) amino (R2NH; RNH2) or other groups associated with flammable properties when linked to nitrate(NO3-). Ferric cations [Fe(3+)] are also not associated with flammable properties as they can not be oxidized to a higher oxidization step. 

Iron trinitrate-9-hydrate was also tested for oxidizing properties. Test results showed that the substance cannot be assigned to the hazard class oxidizing solids according regulation (EG) No. 1272/2008 (CLP-/GHS-regulation) and the substance not to classify as oxidizing according regulation (EG)440/2008.

Furthermore, a DTA (differential thermal analysis) does not show any exothermic decomposition reaction in the range between 30-500°C . Melting occurs in its own hydrate water at about 52°C and dehydration and decomposition occurs in the range of 160 – 200°C and 210-235°C both as endothermic reaction. This demonstrates that no flammable reaction took place nor decomposition products have been formed in an exothermic reaction.

Our own practical experience over a long period of manufacturing of this substance also supports the facts summarized here. No incidents with flammability or decompositions reaction are known from manufacturing, handling or from customer reports.