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10102-20-2

Basic Information
CAS No.: 10102-20-2
Name: SODIUM TELLURITE
Molecular Structure:
Molecular Structure of 10102-20-2 (SODIUM TELLURITE)
Formula: H2O3 Te . 2 Na
Molecular Weight: 221.58
Synonyms: Sodiumtellurate(IV) (Na2TeO3) (6CI,7CI); Telluric acid (H2TeO3), disodium salt(8CI,9CI); Disodium tellurate (Na2TeO3); Disodium tellurite; Disodiumtrioxotellurate; Sodium tellurate (Na2TeO3); Sodium tellurite; Sodium tellurite(Na2TeO3); Sodium tellurium oxide (Na2TeO3)
EINECS: 233-268-4
Density: g/cm3
Boiling Point: °Cat760mmHg
Flash Point: °C
Solubility: appreciable
Appearance: white powder
Hazard Symbols: Toxic by ingestion.
Risk Codes: 23/24/25
Safety: Human poison by ingestion and parenteral routes. Experimental poison by ingestion, intravenous, and intraperitoneal routes. Human systemic effects by ingestion: coma; dyspnea; nausea or vomiting. Human mutation data reported. When heated to decomposition it emits toxic fumes of Te and Na2O. See also TELLURIUM.
PSA: 63.19000
LogP: -0.73720
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Chemistry

Product Name: Sodium tellurite (CAS NO.10102-20-2)


Molecular Formula: Na2O3Te
Molecular Weight: 221.58g/mol
Mol File: 10102-20-2.mol
Einecs: 233-268-4
Appearance: white powder
Melting Point: 710 °C
Stability: Stable. Incompatible with strong oxidizing agents.
H-Bond Donor: 0
H-Bond Acceptor: 3
Product Categories: Metal and Ceramic Science; Salts; Sodium Salts

Uses

Sodium tellurite improves the corrosion resistance of electroplated nickel layers. Solutions of sodium tellurate are used for black or blue-black coatings on iron, steel, aluminum, and copper.

Production

The main source of tellurium is from copper anode slimes, which contain precious metals as well as various tellurides. These slimes are roasted with sodium carbonate and oxygen to produce sodium tellurite.
Ag2Te + Na2CO3 + O2 = 2Ag + Na2TeO3 + CO2 (400-500°C)

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LD50 oral 45mg/kg (45mg/kg)   Hygiene and Sanitation Vol. 32(1), Pg. 15, 1967.
human LDLo oral 30mg/kg (30mg/kg) BEHAVIORAL: COMA

LUNGS, THORAX, OR RESPIRATION: DYSPNEA

GASTROINTESTINAL: NAUSEA OR VOMITING
British Journal of Industrial Medicine. Vol. 3, Pg. 175, 1946.
man LDLo parenteral 29mg/kg (29mg/kg) BEHAVIORAL: COMA

LUNGS, THORAX, OR RESPIRATION: DYSPNEA

GASTROINTESTINAL: NAUSEA OR VOMITING
British Journal of Industrial Medicine. Vol. 3, Pg. 175, 1946.
mouse LD50 oral 20mg/kg (20mg/kg)   Hygiene and Sanitation Vol. 32(1), Pg. 15, 1967.
rabbit LD50 oral 53600ug/kg (53.6mg/kg)   Environmental Quality and Safety, Supplement. Vol. 1, Pg. 1, 1975.
rabbit LDLo intravenous 868ug/kg (0.868mg/kg)   Journal of Pharmacology and Experimental Therapeutics. Vol. 33, Pg. 270, 1928.
rat LD50 intraperitoneal 2400ug/kg (2.4mg/kg)   Environmental Quality and Safety, Supplement. Vol. 1, Pg. 1, 1975.
rat LD50 oral 83mg/kg (83mg/kg)   Hygiene and Sanitation Vol. 32(1), Pg. 15, 1967.
rat LDLo intravenous 2431ug/kg (2.431mg/kg)   Journal of Pharmacology and Experimental Therapeutics. Vol. 33, Pg. 270, 1928.

Consensus Reports

EPA Extremely Hazardous Substances List. Reported in EPA TSCA Inventory.

Safety Profile

Human poison by ingestion and parenteral routes. Experimental poison by ingestion, intravenous, and intraperitoneal routes. Human systemic effects by ingestion: coma; dyspnea; nausea or vomiting. Human mutation data reported. When heated to decomposition it emits toxic fumes of Te and Na2O. See also TELLURIUM.
Safety Information of Sodium tellurite (CAS NO.10102-20-2):
Hazard Codes: T
Risk Statements: 23/24/25 
23:  Toxic by inhalation 
24:  Toxic in contact with skin 
25:  Toxic if swallowed 
Safety Statements: 22-36/37/39-45
22:  Do not breathe dust
36:  Wear suitable protective clothing  
37:  Wear suitable gloves 
39:  Wear eye/face protection 
45:  In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)

Standards and Recommendations

OSHA PEL: TWA 0.1 mg(Te)/m3
ACGIH TLV: TWA 0.1 mg(Te)/m3

Specification

 Sodium tellurite ,its CAS NO. is 10102-20-2,the synonyms is Sodiumtellurate(iv;sodiumtellurate(iv) ; Telluricacid(h2teo3),disodiumsalt ; Telluricacid,disodiumsalt ; Tellurous acid,disodium salt ; Sodium tellurite ; Sodium tellurite (iv) ; Disodium trioxotellurate .