Sodium tellurite

Sodium tellurite
Names
	Other names Sodium Tellurite IV, Tellurous acid disodium salt
Identifiers
CAS Number	10102-20-2 ;
3D model (JSmol)	Interactive image;
ChemSpider	23309 ;
ECHA InfoCard	100.030.231
EC Number	233-268-4;
PubChem CID	24935;
RTECS number	WY2450000;
UNII	0BB57LA23Y ;
UN number	3288
CompTox Dashboard (EPA)	DTXSID2064943 ;
	InChI InChI=1S/2Na.H2O3Te/c;;1-4(2)3/h;;(H2,1,2,3)/q2+1;/p-2 Key: VOADVZVYWFSHSM-UHFFFAOYSA-L ; InChI=1/2Na.H2O3Te/c;;1-4(2)3/h;;(H2,1,2,3)/q2+1;/p-2 Key: VOADVZVYWFSHSM-NUQVWONBAS;
	SMILES [Na+].[Na+].[O-][Te]([O-])=O;
Properties
Chemical formula	Na2TeO3
Molar mass	221.57774 g/mol
Appearance	white crystals, powder
Density	6.245 g/cm3
Melting point	710 °C (1,310 °F; 983 K)
Solubility in water	soluble ; greater than or equal to 100 mg/mL at 68°F
Structure
Crystal structure	rhombic
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H300, H301, H311, H330, H331
Precautionary statements	P260, P261, P264, P270, P271, P280, P284, P301+P310, P302+P352, P304+P340, P310, P311, P312, P320, P321, P322, P330, P361, P363, P403+P233, P405, P501
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	83 mg/kg (rat, oral)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Sodium tellurite is an inorganic tellurium compound with formula Na₂TeO₃. It is a water-soluble white solid and a weak reducing agent. Sodium tellurite is an intermediate in the extraction of the element, tellurium; it is a product obtained from anode slimes and is a precursor to tellurium.