The Bismuth subcarbonate, with the CAS registry number 5892-10-4, is also known as 1,3,5-Trioxo-2,4-dioxa-1,5-dibismapentane. It belongs to the product category of Inorganics. Its EINECS number is 227-567-9. This chemical's molecular formula is CBi₂O₅ and molecular weight is 509.97. What's more, its systematic name is bis(oxobismuthanyl) carbonate. Its classification code is Protectant [topical]. It should be sealed and stored in a cool and dry place. Moreover, it should be protected from light and moisture. It is used in pharmaceutical industry, and it can also be used as an analytical reagent or to prepare bismuth salts. You should not breathe dust. When using it, you must avoid contact with eyes. 

Physical properties of Bismuth subcarbonate are: (1)#H bond acceptors: 5; (2)#H bond donors: 0; (3)#Freely Rotating Bonds: 4; (4)Polar Surface Area: 69.67 Å².

Preparation: this chemical can be prepared by nitric acid bismuth as raw materials, which then has a metathesis reaction with sodium carbonate solution. Then after washing, centrifugal separation, drying, smashing, the end product Bismuth subcarbonate is got.

6 Bi(NO₃)₃ + 4 Na₂CO₃ + H₂O → (BiO)₂CO₃·1/2H₂O + Na₂CO₃ + 4 CO₂

You can still convert the following datas into molecular structure:
(1)SMILES: C(=O)(O[Bi]=O)O[Bi]=O
(2)Std. InChI: InChI=1S/CH2O3.2Bi.2O/c2-1(3)4;;;;/h(H2,2,3,4);;;;/q;2*+1;;/p-2
(3)Std. InChIKey: MGLUJXPJRXTKJM-UHFFFAOYSA-L