Thallium nitrate

  • Thallous nitrate
  • Thallium(I) nitrate
Formula
TlNO3
Structure
Description
White crystals. Odorless.
Uses
As reagent in analytical chemistry, esp for determination of iodine in presence of bromine & chlorine, with potassium chlorate, mercuric chloride, & resin for green fire for signalling at sea.

Registry Numbers and Inventories.
CAS
10102-45-1
EC (EINECS/ELINCS)
233-273-1
EC Index Number
081-002-00-9
EC Class
very toxic, dangerous for the environment
R 26/28 33 51/53
S 13 28.1 45 61
RTECS
XG5950000
RTECS class
Mutagen; Human Data
UN (DOT)
2727
Merck
12,9400
Beilstein/Gmelin
10565 (G)
RCRA
U217
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
NO3Tl
Formula mass
266.37
Melting point, °C
206
Vapor density (air=1)
9.2
Odor Threshold Odor threshold Odorless
Density
1.273 g/cm3
Solubility in water
95 g/L
Viscosity
3.67 cp (225 C)
Thermal expansion
0.000357/K
Heat of fusion
9.59 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Do not store near combustible materials. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Do not breathe dust, vapor, mist, or gas. Keep container tightly closed. Avoid contact with clothing and other combustible materials. Do not ingest or inhale. Use only in a chemical fume hood.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Remove all sources of ignition. In case of spill, sweep up solid or absorb liquid with inert material, then place into a biohazard container. Wear protective equipment.
Disposal code
16
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong reducing agents, strong acids, cyanides (e.g. potassium cyanide, sodium cyanide), hypophosphites, thiocyanates, isothiocyanates.
Decomposition
Nitrogen oxides, irritating and toxic fumes and gases, thallium fumes.

Fire.
Flash Point,°C
450
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Water runoff can cause environmental damage. Dike and collect water used to fight fire. Strong oxidizer. Contact with combustible materials may cause a fire. Use water with caution and in flooding amounts. May accelerate burning if involved in a fire. Containers may explode when heated. Extinguishing media: Use water only! Contact professional fire-fighters immediately. Cool containers with flooding quantities of water until well after fire is out. DO NOT use dry chemicals, carbon dioxide, Halon or foams.
Fire potential
Fire hazard because it is a strong oxidizing agent.
Hazards
May explode from heat or contamination.
Combustion products
Contain toxic thallium fumes.
Health
3
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure limit(s)
NIOSH REL: TWA 0.1 mg/m3 [skin] OSHA PEL: TWA 0.1 mg/m3 [skin] IDLH 15 mg/m3 (as Tl)
Exposure effects
May cause reproductive and fetal effects. Laboratory experiments have resulted in mutagenic effects. There is a danger of cumulative effects.
   Ingestion
May be fatal if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause liver and kidney damage. Methemoglobinemia is characterized by dizziness, drowsiness, headache, breath shortness, cyanosis with bluish skin, rapid heart rate and chocolate-brown colored blood. May cause alopecia (loss of hair). Ingestion of nitrate containing compounds can lead to methemoglobinemia. Large doses of thallium may produce hypotension and bradycardia.
   Inhalation
May cause liver and kidney damage. Causes upper respiratory tract irritation. Causes irritation of the mucous membrane.
   Skin
Causes skin irritation. Excessive drying of the skin may result form repeated or prolonged contact. Absorbed through the skin.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
   Skin
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
2727
Response guide
Hazard class
6.1
Packing Group
II
 
USCG CHRIS Code
TNI
 
HS Code
2834 29 80
 
Std. Transport #
4923393