Thallium oxide (Tl2O3)

456.76500

457.93400

215-229-3

1707

DTXSID1024330

Brown cubic crystal|Brown powder

43.37000

-0.30600

10.2 g/cm³

717 °C

896 °C

875°C

Insoluble in cold and hot water|Insoluble in alkali

-O2(loses oxygen) at 875 °C|Decomposed by HCl with evolution of chlorine and by H2SO4 with evolution of oxygen.|Exists in two oxidation states, /thallous/ (Tl(I)) and /thallic/ (Tl(III)). /Thallium/|Thallium(III) forms some organo-metallic compounds ... . /Thallium(III) ion/

Insoluble in water.

Non-Redox-Active Inorganic Compounds

A mixture of thallic oxide and antimony sulfide or sulfur explodes when ground in a mortar [Mellor 5:421 1946-47]. This material is decomposed by HCl with evolution of chlorine gas, and by H2SO4 with evolution of oxygen.

II

6.1

UN 1707 6

3

R26/28;R33;R51/53

S13-S28-S45-S61

XG2975000

T+:Verytoxic;N:Dangerous for the environment;

P260-P264-P273-P284-P301 + P310-P310

H300 + H330-H373-H411

Generators of waste (equal to or greater than 100 kg/mo) containing this contaminant, EPA hazardous waste number P113, must conform with USEPA regulations in storage, transportation, treatment and disposal of waste.|Thallic oxide is a poor candidate for incineration.

A MIXTURE OF THALLIC OXIDE AND ANTIMONY SULFIDE OR SULFUR EXPLODES WHEN GROUND IN A MORTAR.|Decomposed by hydrochloric acid with evolution of chlorine and by hydrogen sulfide with evolution of oxygen.|Mixtures of the oxide with sulfur or antimony trisulfide explode on grinding in a mortar. Dry hydrogen sulfide ignites, and sometimes feebly explodes, over thallium oxide.

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 THALLIC OXIDE (7 total), please visit the HSDB record page.

Excerpt from ERG Guide 151 [Substances - Toxic (Non-combustible)]: Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways. (ERG, 2016)|Reactive - 1st degree

|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 69 companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Excerpt from ERG Guide 151 [Substances - Toxic (Non-combustible)]: SMALL FIRE: Dry chemical, CO2 or water spray. LARGE FIRE: Water spray, fog or regular foam. Move containers from fire area if you can do it without risk. Dike fire-control water for later disposal; do not scatter the material. Use water spray or fog; do not use straight streams. FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (ERG, 2016)

Excerpt from ERG Guide 151 [Substances - Toxic (Non-combustible)]: As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. SPILL: Increase, in the downwind direction, as necessary, the isolation distance shown above. FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)

Excerpt from ERG Guide 151 [Substances - Toxic (Non-combustible)]: Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. (ERG, 2016)

Excerpt from ERG Guide 151 [Substances - Toxic (Non-combustible)]: Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection. Structural firefighters' protective clothing provides limited protection in fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible. (ERG, 2016)

P113; 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 100 lb or 45.4 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).

P113; As stipulated in 40 CFR 261.33, when thallic oxide, 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/

Excerpt from ERG Guide 151 [Substances - Toxic (Non-combustible)]: Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution. (ERG, 2016)

Excerpt from ERG Guide 151 [Substances - Toxic (Non-combustible)]: Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim calm and warm. Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed. (ERG, 2016)

Fire Hazards -> Reactive - 1st degree