Please note this product is restricted and now requires authorisation to purchase. Please contact our customer service team by phone or e-mail who will be able to assist you further.Molecular Weight: 34.01g/molCAS Number: 7722-84-1Hazard: H302 H315 H318 H335Precaution: P261 P280 P301+P312 P302+P352 £04+P340 P305+P351+P338Price includes Chemical freight surcharge*International delivery is priced on application please contact Customer Services for a quotation.