SN low molecular weight/mw?

[marcy2022]

I've managed to get SN. I haven't done much research regarding sn of late cuz I didn't think I would find sn and my method is a different one, thiopental to be exact. The store person I've bought it from asked what am I using it for and then the person said it's used for baking and stuff. I asked about purity and the person said it's 98% pure.
One thing that concerns me is the mw value says 69.00 while a quick online seat suggests sn mw should be 84.9947. Does it matter? And how does it effect the whole thing?
Also the specifications says there's choloride, sulphate, lead, calcium in there. Should it have calcium?
Is this the real thing?

 

[jodes2]

I don't know about the molecular weight, but it does otherwise all look fine. Calcium is just one of the impurities, it's fine

 

[sleeps]

sodium nitrate has a molar mass of ~85. sodium nitrite's is ~69. according to the packaging you have the right stuff. 98% purity is more than fine

 

[marcy2022]

Oh darn it. Yup you're correct. Thank you for clarifying.