Iron citrate

Auto flammability

Administrative data

Endpoint:

relative self-ignition temperature (solids)

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

other:

Justification for type of information:

In accordance with Column 2 of REACH Annex VII, the self-ignition properties study (required in Section 7.12) does not need to be conducted as a preliminary test showed no evidence of self-heating up to 400°C. This is based on no ignition being observed up to 700°C in a determination of thermal properties by Thermogravimetry (TGA) and Differential Scanning Calorimetry (DSC) (reported in Section 4.2 Melting Point).

Cross-reference

Reason / purpose for cross-reference:

data waiving: supporting information

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

GLP compliance:

no

Type of method:

differential scanning calorimetry

Specific details on test material used for the study:

Name Ferric citrate monohydrate
Batch no. 45882
Appearance red to brown solid powder
Composition Ferric Citrate
CAS No. 2338-05-8
Molecular formula C6H5FeO7
Expiry date 18 May 2019
Storage Room Temperature (20 ± 5 °C); Keep away from light

Key result

Melting / freezing pt.:

>= 169 - <= 239 °C

Atm. press.:

1 atm

Decomposition:

yes

Decomp. temp.:

342.8 °C

The melting range was from 169.43 °C to 238.99 °C (442.58 K to 512.14K) with peak maximum of 198.28 °C (471.43 K) and 208.02 °C (481.17 K).

Conclusions:

The determination of the melting and boiling point of Ferric citrate monohydrate was performed via DSC (differential scanning calorimetry).
Three events were detected.
All events are endothermic.
The results of the determination should be stated under these circumstances as followed:
The first event as dehydration range from 62.76 °C to 170.32 °C (335.91 K to 443.47 K)
The second event as melting range from 169.43 °C to 238.99 °C (442.58 K to 512.14K) with peak maximum of 198.28 °C (471.43 K) and 208.02 °C (481.17 K)
The third event as chemical reaction as 342.78 °C (615.93 K)