Calcium nitrite

Boiling point

Administrative data

Endpoint:

boiling point

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is a solid which melts above 300°C

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

Study period:

23 January - 9 March 2018 [several physical-chemical studies]

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

Good quality study, conducted to GLP.

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

GLP compliance:

yes

Type of method:

capillary method

Melting / freezing pt.:

> 315 °C

Remarks on result:

other: Atmospheric pressure not specified, though presumably 1 atmosphere.

The initial stage of melting was observed at approximately 315°C in both melting point determinations but the subsequent stages of melting were variable (not further specified) and it was considered that entrapped moisture may have contributed to this. A broad endotherm was observed, consistent with the presence of water in the sample.

Conclusions:

In a guideline GLP study, the melting point of calcium nitrite (anhydrous) was determined to exceed 315°C.

Executive summary:

In an OECD guideline study (TG 102), conducted according to GLP, calcium nitrite (anhydrous) was found to melt above approximately 315°C.