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Physical & Chemical properties

Appearance / physical state / colour

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Administrative data

Link to relevant study record(s)

Description of key information

According to handbook data, strontium hydroxide (anhydrous) appears as colourless orthorhobic crystals  at approx. 25°C.  Strontium hydroxide (anhydrous) is hygroscopic. 
According to handbook data strontium hydroxide octahydrate appears as a colourless, deliquesce crystals or white powder. According to the expert judgement of the contract laboratory strontium hydroxide octahyte is a solid, white powder.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:

Additional information

Handbook data considered to be from a trusted source acc. to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance" and therefore, the description of strontium hydroxide could be regarded as valid.

The expert judgment from Smeykal (2010) is considered reliable without restrictions.