The use of Calcium fluoride

Calcium Fluoride has widespread IR application as spectroscopic CaF2 windows, CaF2 prisms and CaF2 lenses. Especially pure grades of Calcium Fluoride (CaF2) find useful application in the UV and as UV Excimer laser windows. Calcium Fluoride (CaF2) is available doped with Europium as a gamma-ray scintillator.

Calcium Fluoride is a cell salt that is used by the body to help retain proper elasticity of the tissues. Any condition that arises from a loss of connective tissue integrity and strength, such as weaknesses of bone, enamel, ligaments and tendons and all prolapsed tissues as well as nodes and nodules can be treated with Calcium Fluoride.

the information of Selenium Hexafluoride


Selenium hexafluoride is the asleep admixture with the blueprint SeF6. It is a colourless gas declared as accepting a “repulsive” odor. It is not broadly encountered and has no bartering applications.Like abounding compounds of selenium, SeF6 is hypervalent. The admixture has octahedral atomic geometry with Se-F band breadth 168.8 pm.

SeF6 can be able from the elements or by the acknowledgment of bromine trifluoride (BrF3) with selenium dioxide. The awkward artefact is antiseptic by sublimation.The about acuteness of the hexafluorides of S, Se, and Te follows the adjustment TeF6 > SeF6 > SF6, the closing getting absolutely apathetic against hydrolysis until top temperatures. SeF6 aswell resists hydrolysis, The gas can be anesthetized through 10% NaOH or KOH after change, but reacts with aerial ammonia at200 °C.Selenium hexafluoride is baneful even at low concentrations.In the U.S., OSHA and ACGIH standards for selenium hexafluoride acknowledgment is an top absolute of 0.05 ppm in air averaged over an eight-hour plan shift.Selenium hexafluoride is a corrosive, achromatic gas at allowance temperature. Selenium hexafluoride is alone hardly acrid in water. It does not action by itself in the environment.Selenium hexafluoride is acclimated as a aerial electrical insulator.

What happens to selenium hexaflouride if it enters the environment?

When appear to air, selenium hexafluoride will acknowledge with moisture, basic added compounds which are removed from the atmosphere by rainfall.

Selenium hexafluoride is hardly acrid in water. It reacts boring with baptize to anatomy added compounds. It may aswell clear from water.

Selenium hexafluoride is hardly acrid in water. It reacts boring with baptize to anatomy added compounds. It may aswell clear from water.

Selenium hexafluoride does not accrue in the aliment chain.

How ability I be apparent to selenium hexaflouride?

The accepted citizenry is absurd to be apparent to selenium hexafluoride.

Workers that use selenium hexafluoride as a aerial electric insulator or use selenium hexafluoride to aftermath added selenium absolute compounds may be apparent to this gas.

How can selenium hexaflouride affect my health?

Exposure to low levels of selenium hexafluoride gas can could could could cause affliction of the respiratory airway, skin, and eye. Acknowledgment to top levels can advance to astringent derma and eye damage, accession of aqueous in the lungs, and eventually death.

Exposure to the liquified gas can could could could cause astringent derma abrasion or algidity and aswell astringent eye accident and blindness.

Long-term acknowledgment to low concentrations of selenium hexafluoride may could could could cause furnishings agnate to acknowledgment to added selenium or fluoride compounds, such as anemic appearance, nervousness, depression, gastrointestinal problems, abridgement of appetite, weight loss, and dental defects.

There is no advice on whether acknowledgment to selenium hexafluoride may affect the changeable arrangement in bodies or in animals.

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the uses of Difluoromethane R-32

Difluoromethane R-32, aswell alleged HFC-32 or R-32, is an amoebic admixture of the dihalogenoalkane variety. Difluoromethane R-32 is based on methane, except that two of the four hydrogen atoms accept been replaced by fluorine atoms. Hence the blueprint is CH2F2 instead of CH4 for accustomed methane.

Difluoromethane R-32 is a refrigerant that has aught blast burning potential. Difluoromethane in a zeotropic (50%/50%) w/w admixture with pentafluoroethane (R-125) is accepted as R-410A, a accepted backup for assorted chlorofluorocarbons (aka Freon) in new refrigerant systems, abnormally for air-conditioning. The zeotropic mix of Difluoromethane with pentafluoroethane (R-125) and tetrafluoroethane (R-134a) is accepted as R-407Athrough R-407E depending on the composition. Likewise the azeotropic (48.2%/51.8% w/w) admixture with chlorotrifluoromethane (R13). As a refrigerant difluoromethane is classified as A2L- hardly combustible . Although it has aught blast burning potential, it has all-around abating abeyant 675 times that of carbon dioxide, based on a 100-year time anatomy  .

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the properties of 2-Hydroxy-3-nitro-5-picoline

CAS No.: 7464-14-4

English name: 2-Hydroxy-5-methyl-3-nitropyridine


CBNumber: CB0109633

Molecular formula: C6H6N2O3

Molecular Weight: 154.12

MOL File: 7464-14-4.mol

Chemical properties of 2 – hydroxy – 5 – methyl – 3 – nitropyridine

Melting point: 179 ° C. (dec.) (lit.)

Database CAS: 7464-14-4 (CAS DataBase Reference)

Safety Information of 2-Hydroxy-3-nitro-5-picoline

Hazard Symbols: Xi

Risk Codes: 36/37/38

Safety instructions: 26-36

WGKGermany: 3

Note The hazard: Irritant

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the specification of 2-Floro-5-(trifluoromethyl)benzylamine

CAS No. 199296-61-2


Synonyms: RARECHEM AL BW 0667;2-FLORO-5-(TRIFLUOROMETHYL)BENZYLAMINE;2-FLUORO-5-(TRIFLUOROMETHYL)BENZYLAMINE;2-Fluoro-5-(trifluoromethyl)benzylamine97%;2-Fluoro-5-(trifluoromethyl)benzylamine 97%;[2-Fluoro-5-(trifluoromethyl)phenyl]methanamine

CBNumber: CB8362333

Molecular Formula: C8H7F4N

Formula Weight: 193.14

MOL File: 199296-61-2.mol


refractive basis : 1.451

storage temp. : Store beneath nitrogen

Sensitive : Air Sensitive

CAS DataBase Reference: 199296-61-2(CAS DataBase Reference)

NIST Chemistry Reference: 2-Fluoro-5-(trifluoromethyl)benzylamine(199296-61-2)

Safety of 2-Floro-5-(trifluoromethyl)benzylamine

Hazard Codes : C,Xi

Risk Statements : 34

Safety Statements : 26-36/37/39

RIDADR : 2735

Hazard Note : Corrosive/Store beneath nitrogen

HazardClass : 8

PackingGroup : III

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the description of 2-Bromoacetophenone

2-Bromoacetophenone Property

mp : 48-51 °C(lit.)

bp :135 °C18 mmHg(lit.)

density : 1.476

Fp : >230 °F

storage temp. : 2-8°C


Merck : 14,1402

BRN : 606474

Stability:: Stable. Incompatible with able bases, able acerbic agents. Combustible.

CAS DataBase Reference:70-11-1(CAS DataBase Reference)

NIST Chemistry Reference: Ethanone, 2-bromo-1-phenyl-(70-11-1)

EPA Actuality Registry System: Ethanone, 2-bromo-1-phenyl-(70-11-1)

Safety of 2-Bromoacetophenone

Hazard Codes : C

Risk Statements : 34-20/21/22

Safety Statements : 26-36/37/39-45

RIDADR : UN 2645 6.1/PG 2

WGKGermany: 3

F : 8-19

Hazard Note : Corrosive

HazardClass : 6.1

PackingGroup : II

2-Bromoacetophenone Chemical Properties,Usage,Production

Chemical Properties

Off white-grey blooming crystaline powder

General Description of 2-Bromoacetophenone

A apparent solid or a aqueous with a aciculate odor. Baneful by inhalation, assimilation and derma absorption. A astringent eye irritant (a lachrymator). Used to accomplish added chemicals.

Air & Baptize Reactions

Reacts boring with damp in air to anatomy hydrogen bromide.

Reactivity Profile

2-Bromoacetophenone reacts boring with metals causing balmy corrosion.

Health Hazard

TOXIC; inhalation, assimilation or derma acquaintance with actual may could could could cause astringent abrasion or death. Acquaintance with aqueous actuality may could could could cause astringent burns to derma and eyes. Avoid any derma contact. Effects of acquaintance or assimilation may be delayed. Blaze may aftermath irritating, acerb and/or baneful gases. Runoff from blaze ascendancy or concoction baptize may be acerb and/or baneful and could could could cause pollution.

Fire Hazard

Combustible material: may bake but does not burn readily. If heated, abasement may anatomy atomic mixtures with air: indoors, outdoors and sewers access hazards. Acquaintance with metals may advance combustible hydrogen gas. Containers may backfire if heated. Runoff may adulterate waterways. Actuality may be transported in a aqueous form.

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the basic information of 2,2,3,3-Tetrafluoro-1-propanol (TFP)

PTFE-propanol with non-combustible, non-toxic, non-corrosive and excellent lubricity, is a novel fluorine-containing solvent, due to itsgood solubility and gasification speed, low toxicity, is widely used as a CD-R (W) paint solvents. Also widely used in medicine, pesticides, dyes, fine chemicals and intermediates, photographic and colormaking it up, agents, finishing agents, fluorine-containing resin,perfluorinated rubber processing aids, as well as electronic products,cleaning agents. Excellent cleaning performance, as a cleaning agent has its important use in microelectronics and optoelectronics,its atmosphere damaging effects, is an excellent Freon cleaningagent alternatives.

2, 2, 3, 3-Tetrafluoro-1-propanol agreeable 99.5% min

Moisture 0.3% max

Peroxide 50ppm max

Appearance clear, achromatic aqueous

Standard Packing

250kgs/200Ladamant drum

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the information of 2-Pentylfuran

2-Pentylfuran is achromatic liquid, acrid in booze and added amoebic flux, baking point 57 ~59 ℃/ 1333 Pa, the about body of d234 0.8837, refractive basis n20D 1.4462.

Natural existence: the actuality of the parsley, coffee, potatoes film.

Sensory characteristics: with bean aroma, fruity, earth, blooming vegetables, balm and balm agnate rhyme.

2-Pentylfuran is used for the deployment of bread, nuts, coffee, and balm of the acidity of vegetables.

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the information of 4-Methylthio thiophenol

4-Methylthio thiophenol  mercaptan and chemical properties
Melting point: 19-23 ° C.
Boiling point: 116-117 ° C, 3mm
Density: 1.19
Refractive Index: 1.6530
Flash Point:> 230 ° F
Sensitivity: Air, the Sensitive
BRN: 1.9315 million
Database CAS: 1122-97-0 (CAS DataBase Reference)
Safety Information
Hazard Symbols: Xi
Risk Codes: 36-43
Safety Instructions: 26-36/37
Transport of Dangerous Goods Number: 2810
WGK Germany: 3
HazardClass: 6.1
PackingGroup: III

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From: Fluorides

Applications of 2,2,3,3-Tetrafluoro-1-propanol (TFP)

2,2,3,3-Tetrafluoro-1-propanol (TFP)
CAS Number: 76-37-9
Molecular Weight: 132.06
Molecular Formula: C3H4F4O
Physical Appearance: Colorless liquid
2,2,3,3-Tetrafluoro-1-propanol can be used as intermediates of pharmaceuticals and pesticides, charwoman agent. Also activated in disc (CD-ROM) colorant bread-and-butter etc.
1-Propanol is a primary alcohol with the formula CH3CH2CH2OH. This colorless liquid is also known as propan-1-ol, 1-propyl alcohol, n-propyl alcohol, n-propanol, or simply propanol. It is an isomer of isopropanol (2-propanol). It is used as a solvent in the pharmaceutical industry, and for resins and cellulose esters. It is formed naturally in small amounts during many fermentation processes.
1-Propanol is thought to be similar to ethanol in its effects on human body, but 2-4 times more potent. Oral LD50 in rats is 1870 mg/kg (compared to 7060 mg/kg for ethanol). It is metabolized into propionic acid. Effects include alcoholic intoxication and high anion gap metabolic acidosis. As of 2011, only one case of lethal 1-propanol poisoning was reported.
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