10102-45-1 Usage
Description
THALLIUM(I) NITRATE is a colorless crystalline solid with a melting point of 206°C. It is toxic by ingestion and skin absorption. It exists in three allotropic modifications: a rhombohedral gamma form that transforms to trigonal beta form at 75°C, the trigonal converting to a cubic alpha form at 145°C. The density of the salt is 5.56 g/cm3, and it vaporizes at 450°C with decomposition. THALLIUM(I) NITRATE is moderately soluble in water, with a solubility of 9.55 g/100mL at 20°C, and is insoluble in alcohol.
Uses
Used in Analytical Chemistry:
THALLIUM(I) NITRATE is used as a reagent in analytical chemistry, particularly for the determination of iodine in the presence of bromine (Br) and chlorine (Cl). It is also used with potassium chlorate (KClO3), mercury chloride (HgCl), and resin for green fire in signaling at sea.
Used in Chemical Production:
THALLIUM(I) NITRATE is used to make other chemicals due to its unique properties and reactivity. Its cubic crystal structure and ability to transform between different allotropic forms make it a valuable component in various chemical processes.
Preparation
Thallium nitrate is prepared by reacting thallium metal, thallous oxide, Tl2O or thallous hydroxide, TlOH, with nitric acid followed by crystallization: Tl2O+ 2HNO3 → 2TlNO3 + H2O TlOH + HNO3 → TlNO3 + H2O.
Air & Water Reactions
Water soluble.
Reactivity Profile
THALLIUM(I) NITRATE is an oxidizing agent. May start a fire when in contact with organic materials. Mixtures with alkyl esters may explode, owing to the formation of alkyl nitrates. Mixtures with phosphorus, tin(II) chloride, or other reducing agents may react explosively [Bretherick, 1979 p. 108-109].
Hazard
A poison. Strong oxidizing agent, fire and
explosion risk. TLV: 0.1 mg(Tl)/m3. Toxic by skin
absorption.
Health Hazard
Thallium is one of the more toxic elements both as an acute and a chronic poison. Effects of exposure are cumulative and onset of symptoms may be delayed 12 to 24 hours. May be fatal if inhaled, ingested or absorbed through the skin. Irritating to skin and eyes. Readily absorbed through the skin and digestive tract. Ingestion of soluble thallium compounds has caused many deaths Ingestion of sublethal quantities may cause nausea, vomiting, diarhea, abdominal pain, and bleeding from the gut accompanied or followed by drooping eyelids, crossed eyes, weakness, numbness, tingling of arms and legs, trembling, tightness and pain in the chest. Loss of hair may occur in two to three weeks. Severe intoxication may cause prostration, rapid heartbeat, convulsions, and psychosis. Some effects may be permanent.
Safety Profile
Poison by ingestion, intravenous, intraperitoneal, and subcutaneous routes. Human systemic effects by ingestion: hypermouhty, diarrhea, nausea or vomiting, and dehydration. Mutation data reported. When heated to decomposition it emits very toxic fumes of T1 and NO,. See also THALLIUM COMPOUNDS and NITRATES.
Carcinogenicity
There is inadequate carcinogenicity
data. From the results of a study with thallium sulfate
(383), the highest daily dose, 0.25 mg/kg, was
considered a NOAEL. Using the molecular weight of
TlNO3 to Tl for conversion, this NOAEL was
converted to 0.26 mg TlNO3/kg per day.
Purification Methods
The nitrate crystallises from warm water (1mL/g) on cooling to 0o. POISONOUS.
Check Digit Verification of cas no
The CAS Registry Mumber 10102-45-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,0,1,0 and 2 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 10102-45:
(7*1)+(6*0)+(5*1)+(4*0)+(3*2)+(2*4)+(1*5)=31
31 % 10 = 1
So 10102-45-1 is a valid CAS Registry Number.
InChI:InChI=1/NO3.Tl/c2-1(3)4;/q-1;+1
