Thallium selenide (Tl2Se)

487.73

489.86500

239-627-1

Dark gray plates with a metallic luster

0

-0.38080

pieces

9.05

340°C

Insoluble in water and acids.

Heat of formation (gaseous)= 43.55 kcal/mol|Thallium(III) forms some organo-metallic compounds ... . /Thallium(III) ion/|Exists in two oxidation states, /thallous/ (Tl(I)) and /thallic/ (Tl(III)). /Thallium/

II

6.1

UN 1707 6.1/PG 2

3

26/27/28-33-63-51/53-26/28-50/53-23/25

22-36/37/39-45-61-28-13-60-20/21

T+,N,T

P260, P264, P270, P271, P273, P284, P301+P310, P304+P340, P310, P314, P320, P321, P330, P391, P403+P233, P405, P501

H300

Generators of waste (equal to or greater than 100 kg/mo) containing this contaminant, EPA hazardous waste number P114, must conform with USEPA regulations in storage, transportation, treatment and disposal of waste.

THALLIUM SELENIDE REACTS WITH HALOGENS TO GIVE HALOSELENIDES.|Do not use metal and acid to reduce selenium compounds. This will produce toxic gaseous hydrogen selenide. /Selenium compounds/

USEPA; Ambient Water Quality Criteria Doc: Thallium (1980) EPA 440/5-80-074|RANGEL GUERRA R ET AL; THALLIUM INTOXICATION: CLINICAL EXPERIENCE WITH 14 CASES; REV INVEST CLIN 32 (4): 381-90 (1980). CLINICAL EXPERIENCE WITH 14 CASES OF THALLIUM INTOXICATION IS DISCUSSED.|Ludolph A et al; Trace Elem Med 3 (3): 121-5 (1986). Clinical and electrophysiological data from chronic thallium exposure in cement plant workers are presented.|Sharma J et al; Toxicol Environ Chem 11 (2) (1986). A review with 152 references on environmental pollution by thallium, and its toxicity and metabolism in humans and laboratory animals.|For more Special Reports (Complete) data for THALLIUM SELENIDE (10 total), please visit the HSDB record page.

|Danger|H300 (100%): Fatal if swallowed [Danger Acute toxicity, oral]|P260, P264, P270, P271, P273, P284, P301+P310, P304+P340, P310, P314, P320, P321, P330, P391, P403+P233, P405, and P501|Aggregated GHS information provided by 42 companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Listed as a hazardous air pollutant (HAP) generally known or suspected to cause serious health problems. The Clean Air Act, as amended in 1990, directs EPA to set standards requiring major sources to sharply reduce routine emissions of toxic pollutants. EPA is required to establish and phase in specific performance based standards for all air emission sources that emit one or more of the listed pollutants. Thallium selenide is included on this list.

P114; An acute hazardous waste when a discarded commercial chemical product or manufacturing chemical intermediate or an off-specification commercial chemical product or a manufacturing chemical intermediate.

Persons in charge of vessels or facilities are required to notify the National Response Center (NRC) immediately, when there is a release of this designated hazardous substance, in an amount equal to or greater than its reportable quantity of 1000 lb or 454 kg. The toll free number of the NRC is (800) 424-8802; In the Washington D.C. metropolitan area (202) 426-2675. The rule for determining when notification is required is stated in 40 CFR 302.4 (section IV. D.3.b).

P114; As stipulated in 40 CFR 261.33, when thallium(I) selenite, as a commercial chemical product or manufacturing chemical intermediate or an off-specification commercial chemical product or a manufacturing chemical intermediate, becomes a waste, it must be managed according to federal and/or state hazardous waste regulations. Also defined as a hazardous waste is any container or inner liner used to hold this waste or any residue, contaminated soil, water, or other debris resulting from the cleanup of a spill, into water or on dry land, of this waste. Generators of small quantities of this waste may qualify for partial exclusion from hazardous waste regulations (40 CFR 261.5(e)).

Thallium inhibits enzymes, but nothing is really known of a biochemical lesion. In fatal cases, there usually is extensive peripheral paralysis and cardiovascular involvement. The immediate cause of death may be peripheral respiratory failure of cardiac arrest. /Thallium/

Thallium selenide (Tl2Se): INACTIVE