Declension table of ?rasatva

Neuter	Singular	Dual	Plural
Nominative	rasatvam	rasatve	rasatvāni
Vocative	rasatva	rasatve	rasatvāni
Accusative	rasatvam	rasatve	rasatvāni
Instrumental	rasatvena	rasatvābhyām	rasatvaiḥ
Dative	rasatvāya	rasatvābhyām	rasatvebhyaḥ
Ablative	rasatvāt	rasatvābhyām	rasatvebhyaḥ
Genitive	rasatvasya	rasatvayoḥ	rasatvānām
Locative	rasatve	rasatvayoḥ	rasatveṣu

Compound rasatva -

Adverb -rasatvam -rasatvāt