Lithium fluoride
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Lithium fluoride
structure -
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CAS No:
7789-24-4
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Formula:
FLi
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Chemical Name:
Lithium fluoride
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Synonyms:
Lithium fluoride (LiF);Lithium fluoride;TLD 100;Lithium monofluoride;NTL 50;PTL 710;Lithium monofluoride (LiF);NSC 12957;LFDNB;12285-65-3;40619-18-9;64975-45-7;2018280-05-0;2103998-61-2;2252328-00-8;2624249-90-5
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CAS No:
Description
Lithium fluoride is a white crystalline solid. It is not hygroscopic as are the other lithium halides and is not affected by exposure to the air. Lithium fluoride is the least soluble of the alkali metal fluorides. This characteristic likens it to the alkaline earth fluorides. Lithium fluoride is different from the other lithium halides in that it does not form hydrates which can be isolated from solution. Lithium fluoride does show an increase in solubility as hydrofluoric acid is added to an
OtherSolid
Lithium fluoride Basic Attributes
25.93940
26.01440
235-292-0
1485XST65B
12957
Cubic crystals (NaCl lattice) or white fluffy powder|Fine white powder
2826199090
Characteristics
0
-2.99600
OtherSolid
2.640 g/cm3 @ Temp: 20 °C
848 °C
1681 °C
1680°C
1.3915
0.27 G SOL IN 100 ML WATER @ 18 DEG C; INSOL IN ALCOHOL; SOL IN HYDROGEN FLUORIDE
Store in a cool, dry place. Store in a tightly closed container.
1 mm Hg at 1047 deg C
LD in guinea pigs (mg/kg): 200 orally, 2000 s.c. (Waldbott)
Volatilizes at 1100-1200 °C; with hydrofluoric acid it forms lithium bifluoride, LiHF2; with lithium hydroxide it forms a double salt LiF.LiOH|Does not react with water at red heat|Standard molar enthalpy of formation at 298.15 K: -616.0 kJ/mol; molar heat capacity at constant pressure and 298.15 K: 41.6 J/mol K|Enthalpy of fusion: 27.09 kJ/mol
Safety Information
III
6.1
UN 3288
2
R23/24/25
S26-S45
OJ6125000
T
Stable, but hygroscopic. Hydrolyzes in the presence of water to form hydrofluoric acid, which attacks glass - do not store in glass bottles. Incompatible with aqueous solutions, strong acids, strong oxidizing agents.
Missing Phrase - N15.00950417-P305 + P351 + P338
H301-H315-H319-H335
SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.
|Danger|H301 (100%): Toxic if swallowed [Danger Acute toxicity, oral]|P261, P264, P270, P271, P280, P301+P310, P302+P352, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 38 companies from 1 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|P201, P202, P260, P263, P264, P270, P281, P301+P310, P308+P313, P321, P330, P405, and P501|Aggregated GHS information provided by 40 companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H301 (73.63%): Toxic if swallowed [Danger Acute toxicity, oral]|P201, P202, P261, P264, P270, P271, P280, P281, P301+P310, P301+P312, P302+P352, P304+P340, P305+P351+P338, P308+P313, P312, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 312 companies from 20 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
To prevent lesions of respiratory system, concentrations...should not exceed recommended max permissible levels. ... Workers...should be supplied with eye and face protection, respiratory protective equipment, protective clothing... Foot and leg protection. ...lanolin /may be used/ as barrier cream. /Fluorine and compounds/
SRP: Contaminated protective clothing should be segregated in such a manner so that there is no direct personal contact by personnel who handle, dispose, or clean the clothing. Quality assurance to ascertain the completeness of the cleaning procedures should be implemented before the decontaminated protective clothing is returned for reuse by the workers. Contaminated clothing should not be taken home at end of shift, but should remain at employee's place of work for cleaning.|SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.|SRP: Local exhaust ventilation should be applied wherever there is an incidence of point source emissions or dispersion of regulated contaminants in the work area. Ventilation control of the contaminant as close to its point of generation is both the most economical and safest method to minimize personnel exposure to airborne contaminants.|Ventilation control: processes in which there is potential exposure hazard should be equipped with local exhaust ventilation and should, where possible, be mechanized. /Fluorine and compounds/
Strong irritant to eyes and skin.
Toxicity
/LITHIUM SALTS/...SILICATE, PHOSPHATE, FLUORIDE & CHLORIDE ARE FOUND IN SMALL AMT IN SEVERAL MINERALS, ESPECIALLY SILICATES SUCH AS PETALITE & SPODUMENE, & IN SMALL CONCENTRATIONS IN SEA WATER & MANY MINERAL WELLS.
Drug Information
Lethal dose for man of soluble fluorides was estimated at about 2.5 g... Ingestion of as little as 9 mg/kg has caused human deaths. /Fluorides/
All sol lithium cmpd are readily absorbed from GI tract as well as from sc, im, and ip depots, appearing in tissue fluids and organs within a few min of admin. /Sol lithium cmpd/|Li+ is absorbed readily and almost completely from the GI tract. Complete absorption occurs in about 8 hr, with peak concn in plasma occurring 2 to 4 hr after an oral dose. Slow-release preparations of lithium carbonate provide a slower rate of absorption and thereby minimize early peaks in plasma concn of the ion. However, absorption can be variable, and the incidence of lower intestinal tract symptoms may be incr. Li+ initially is distributed in the extracellular fluid and then gradually accumulates in various tissues. The concentration gradient across plasma membranes is much smaller than those for Na+ and K+. The final volume of distribution (0.7 to 0.9 L/kg) approaches that of total body water and is much lower than that of most other psychotropic agents, which are lipophilic and protein-bound. Passage through the blood-brain barrier is slow, and when a steady state is achieved, the concn of Li+ in the cerebrospinal fluid is about 40% to 50% of the concn in plasma. The ion does not bind appreciably to plasma proteins. /Li+/|LI+ OBEYS TWO-COMPARTMENT MODEL KINETICS AFTER ORAL DOSES TO HUMAN SUBJECTS. ITS DISTRIBUTION & ELIMINATION KINETICS ARE INDEPENDENT OF THE ACCOMPANYING ANION & THE TERMINAL ELIMINATION T/2 IS ABOUT 22 HR. /Li+/|Approximately 95% of a single dose of Li+ is eliminated in the urine. From one- to two-thirds of an acute dose is excreted during a 6- to 12-hr initial phase of excretion, followed by slow excretion over the next 10 to 14 days. The elimination half-life averages 20 to 24 hr. With repeated admin, Li+ excretion incr during the first 5 to 6 days until a steady state is reached between ingestion and excretion. When therapy with Li+ is stopped, there is a rapid phase of renal excretion followed by a slow 10- to 14-day phase. Since 80% of the filtered Li+ is reabsorbed by the proximal renal tubules, clearance of Li+ by the kidney is about 20% of that for creatinine, ranging between 15 and 30 mL/min. This is somewhat lower in elderly patients (10 to 15 mL/min). /Li+/|For more Absorption, Distribution and Excretion (Complete) data for LITHIUM FLUORIDE (11 total), please visit the HSDB record page.
The plasma half-life (in healthy volunteers) shows a considerable variability: from 5 to 40 hr, with most values between 15 and 30 hr, it depends on the duration of treatment as well as on kidney function and age. /Li+/|...AFTER ORAL DOSES TO HUMAN SUBJECTS...THE TERMINAL ELIMINATION T/2 IS ABOUT 22 HR. /LITHIUM/|... The clinical features and pharmacokinetics of 22 lithium overdoses are described. Effectiveness of different treatment regimens regarding elimination of lithium is discussed. Origin of overdose was due to deliberate poisoning or precipitated by concomitant diseases, coadministration of drugs, or combination of both. Treatment included supportive care, diuretics (15/22), hemodialysis (HD; 9/22), and mechanical ventilation (3/22). Severity of lithium intoxication was classified in 50% as I degrees, in 41% as II degrees, and in 9% as III degrees according to Hansen and Amdisen. Renal impairment on admission was diagnosed in 82% of the patients. Half-life of lithium in serum was 3.5 +/- 0.8 hr during the first HD, and 29 +/- 14 and 29 +/- 6 hr during therapy with diuretics or supportive treatment, respectively. Lithium clearance during HD was 160 +/- 15 mL/min, and renal clearance during HD or treatment with diuretics was approximately 20 and 15 +/- 9 mL/min, respectively. Renal lithium clearance was not influenced by HD therapy. There was no difference regarding half-life and clearance between the group that had an unspecific treatment or the group treated with diuretics. ... /Lithium NOS/|The usual elimination half-life is 12 to 27 hr, but it may rise to nearly 60 hr if renal excretion is compromised. /Li+/
Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . Anticipate seizures and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during treatment ... . Do not use emetics. For ingestion, rinse mouth and administer 5 ml/kg up to 200 ml of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool ... . Cover skin burns with dry sterile dressings after decontamination ... . /Lithium and related compounds/|Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in severe respiratory distress. Positive-pressure ventilation techniques with a bag-valve-mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Monitor cardiac rhythm and treat arrhythmias if necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's (LR) if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors if patient is hypotensive with a normal fluid volume. Watch for signs of fluid overload ... . Treat seizures with diazepam or lorazepam ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Lithium and related compounds/|Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . Anticipate seizures adn treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 ml/kg up to 200 ml of water for dilution if the patent can swallow, has a strong gag reflex, and does not drool. ... . Cover skin burns with dry sterile dressings after decontamination ... . /Fluorine and related compounds/|Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in severe respiratory distress. Positive-pressure ventilation techniques with a bag valve mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Monitor cardiac rhythm and treat arrhythmias if necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's (LR) if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors if patient is hypotensive with a normal fluid volume. Watch for signs of fluid overload ... . Treat seizures with diazepam or lorazepam ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Fluorine and related compounds/
/OTHER TOXICITY INFORMATION/ Inorganic fluorides are generally highly irritant and toxic. /Fluorides/|/OTHER TOXICITY INFORMATION/ With some lithium salts, the anion probably determines the major toxicity such as... lithium fluoride.|/OTHER TOXICITY INFORMATION/ ...Lithium fluoride is the most toxic of the lithium salts studied.|/SIGNS AND SYMPTOMS/ Acute intoxication can occur in the initial phase in a course of therapy, but also at any point of time during long-lasting treatment or after an acute overdose. At plasma levels between 1.5 and 2.5 mmol/L, signs of toxicity include anorexia, dry mouth, nausea, vomiting, diarrhea, tremor of the hands, faintness of musculature, thirst, leucocytosis, and concentration and memory disturbances (especially with older people). These phenomena are often seen in the initial phase of a course of treatment and usually disappear when treatment continues, except with the tremor of the hands. In elderly people, reversible delirious conditions can occur with confusion, restlessness, and ataxia. At plasma levels above 2.5 mmol/L, serious toxic symptoms occur; fasciculations, muscle contractions, hyperreflexia and hypertonia, drowsiness, confusion, sometimes epileptiform insults, hypotension, coma, collapse. Independent of the plasma level, changes can occur in the ECG and in the EEC, with symptoms such as polyuria and polydipsia, seldom nephrogenic diabetes insipidus, ulcers of the leg, enhancement of acne and psoriasis, transient hyperglycemia, pruritus, and a metal taste. In about 5% of the cases, a (usually reversible) hypothyroidia develops. /Li+/|For more Human Toxicity Excerpts (Complete) data for LITHIUM FLUORIDE (6 total), please visit the HSDB record page.
GR 200-A
Lithium fluoride Use and Manufacturing
Prepared from lithium hydroxide and hydrogen fluoride or by dissolving lithium carbonate in excess hydrogen fluoride, evaporating to dryness, and heating to red heat.|Reaction of hydrofluoric acid with lithium carbonate.|Reaction of lithium carbonate or hydroxide and hydrofluoric acid
1. Lithium fluoride can be widely used as a cosolvent in the welding process of glass-lined, copper and aluminum and in the chemical process of salt melting; it is also recommended as a heat carrier for the storage of solar radiation thermal energy in aerospace technology; it can also be used in the electrolysis of aluminum and In the metallurgical industry. High-purity lithium fluoride is used to make fluorinated glass and can also be used to make prisms for spectrometers and X-ray monochromators. Lithium ion battery raw material. 2. As an electrolyte component in the production of aluminum electrolysis, the electrical conductivity and current efficiency can be improved to improve the metal production capacity and reduce the cost. The wettability of the carbon anode can also be improved. In the ceramic industry, it has a lower combustion temperature and improved resistance to quenching and thermal shock. It is used as a flux component for welding aluminum and aluminum alloys. High-purity lithium fluoride is used to make lithium fluoride glass and is also used to make prisms for spectrometers and X-ray monochromators. 3. Used as analysis crystal in wavelength analysis type X-ray fluorescence spectrometer. Also used as a desiccant and flux. Used in the manufacture of enamel industrial optical glass.
constituent of reduction cell bath
Metal products not covered elsewhere
Grade: Guaranteed 98% (min) lithium fluoride; CP; single pure crystals.
Primary metal manufacturing|Lithium fluoride (LiF): ACTIVE|Lithium fluoride (Li(HF2)): INACTIVE|Lithium fluoride (6LiF): ACTIVE|Lithium fluoride (7LiF): INACTIVE
Computed Properties
Molecular Weight:26.0
Hydrogen Bond Acceptor Count:1
Exact Mass:26.01440660
Monoisotopic Mass:26.01440660
Heavy Atom Count:2
Complexity:2
Covalently-Bonded Unit Count:2
Compound Is Canonicalized:Yes
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