锂产品:盐类

1. Lithium bromide 

CAS NO.: 7550-35-8

EC NO.: 231-439-8

Appearance: White solid; Hygroscopic

Specification:

Standard NO: QJ0213-1997

Item

First grade %

Second grade %

Purity ≥

55+/-0.5

50+/0.5

Water insoluble ≤

0.005

0.005

Na+K ≤

0.01

0.01

Fe ≤

0.001

0.002

Ca ≤

0.003

0.003

Cl ≤

0.002

0.005

SO4 ≤

0.01

0.015

Li2CrO4 ≤

0.015+/-0.002

0.015+/-0.002

PH ≤

9-10

9-10

Applications 

Lithium bromide is used in air-conditioning systems as desicant. Otherwise the salt is useful as a reagent in organic synthesis. For example it reversibly forms adducts with some pharmaceuticals.

Medical applications

Lithium bromide was used as a sedative beginning in the early 1900s, but it fell into disfavor in the 1940s when some heart patients died after using it as a salt substitute. Like lithium carbonate and lithium chloride it was used as treatment for bipolar disorder.

Doses as low as 225 mg/day of LiBr can lead to bromism.

 

2. Lithium Nitrate

CAS NO.: 7790-69-4

Appearance: White to light yellow solid

Specification: 

 

Item

Top grade %

First grade %

LiNO3.H2O

Purity ≥

99

98

98

Appearance

White powder

White powder

White crystal

H2O ≤

0.50

1.0

--

Water insoluble ≤

0.01

0.02

0.01

Na+K ≤

0.10

0.10

0.08

Ca ≤

0.01

0.01

0.01

Fe ≤

0.005

0.01

0.005

SO4 ≤

0.03

0.03

0.02

 Applications

This deliquescent colourless salt is an oxidizing agent used in the manufacture of red-colored fireworks and flares.

Lithium Nitrate has been proposed as a medium to store heat collected from the sun for cooking. A Fresnel lens would be used to melt solid lithium nitrate, which would then function as a 'solar battery', allowing heat to be redistributed later by convection.

 

3. Lithium fluoride

CAS NO.: 7789-24-4

EC NO.: 232-152-0

Appearance: White powder

Specification:

Item

Top grade %

First grade %

Purity ≥

99

98

Water insoluble ≤

0.3

0.5

Fe ≤

0.002

0.003

Cl ≤

0.001

--

SO4 ≤

0.005

0.02

SiO2 ≤

0.04

--

Heavy metal ≤

0.005

--

Applications

[In molten salts

Fluorine is produced by the electrolysis of molten potassium bifluoride. This electrolysis proceeds more efficiently when the electrolyte contains a few percent of LiF, possibly because it facilitates formation of Li-C-F interface on the carbon electrodes. A useful molten salt consists of a mixture of LiF, together with sodium fluoride and potassium fluoride.

]Optics

Because of its large band gap, LiF crystals are transparent to short wavelength ultraviolet radiation, more so than any other material. LiF is therefore used in specialized UV optics.

[Radiation detectors

It is also used as a means to record ionizing radiation exposure from gammarays,beta particles and netrons in thermoluminescent dosimeters.

[Cathode for PLED

Lithium fluoride is widely used in PLED as a coupling layer to enhance electron injection. The thickness of LiF layer is usually around 1 nm.