Mercury(II) Oxide RED AR 50g CAS 21908-53-2
31901-50g

Specification: -

Assay...............99.0% min
Apperance of the solution.............passes test
Impurities with an acidic or alkaline reaction - passes test
Cl...................................0.05% max
NO3..............................passes test
Yellow mercury (II) oxide.passes test
Substance not reducible with formic acid (residue on ignition)- 0.05%max
Loss on drying (105deg C)..0.5% max

Formula : HgO        
MWT : 216.59
CAS : 21908-53-2
UN 1641; DG 6.1; Packing group II

Danger of cumulative effects. Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.  Very toxic by inhalation, in contact with skin and if swallowed.  
Safety: Keep container tightly closed.  Do not breathe gas/fumes/vapour/spray.  If insufficient ventilation, wear suitable respiratory equipment.  If you feel unwell, contact a doctor or Poisons Information Centre immediately (show the label where possible). Avoid release to the environment. Refer to special instructions/safety data sheet. Avoid contact with skin and eyes. Wear suitable protective clothing, gloves and eye/face protection.