CAS No.: 7681-57-4Molecular Formula: Na2S2O5Molecular Weight: 190.10White or light yellow crystalline powder , relative density is 1.4 . Soluble ...ssss
CAS No.: 7757-83-7Molecular Formula: Na2SO3Molecular Weight: 126.04White crystal or powder; no foul. Soluble in water, very slightly soluble in e...ssss
Arsenic is a well-known chemical element, element symbol As, atomic sequence 33. The first record of arsenic was made in 1250 by Albertus Magnus....ssss