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Hydrofluoric acid

Hydrofluoric acid structure

CAS No:
7664-39-3
Formula:
FH
Chemical Name:
Hydrofluoric acid
Synonyms:
Hydrofluoric acid;Anhydrous hydrofluoric acid;Fluorhydric acid;Hydrofluoric acid gas;Hydrogen fluoride (HF);Hydrogen fluoride;Antisal 2b;Fluorine monohydride;Hydrogen monofluoride;Fluorine hydride (FH);Fluoric acid;Alsurf 45;G-C Hydrofluoride Gel;Urine Luck 6.3;Vita ceramic etch;Ultradent Porcelain Etch;Porcelain Conditioner;SA-X;32057-09-3;326604-75-5
Categories:
Inorganic Chemistry > Inorganic Acid

Description

It appears as colorless fuming liquid. It is intensively exothermic when being dissolved in water and further become hydrofluoric acid. colourless gas with a pungent odour

Hydrofluoric acid Basic Attributes

Molecular Weight：

20.00630

Exact Mass：

20.00620

EC Number：

231-634-8

HScode：

2811110000

Characteristics

PSA：

XLogP3：

0.53270

Appearance：

colourless gas with a pungent odour

Density：

0.991 g/cm³ @ Temp: 19.54 °C

Melting Point：

-83.36 °C

Boiling Point：

20 °C

Flash Point：

-37.8ºC

Water Solubility：

H2O: soluble

Storage Conditions：

Protect against physical damage. Store at in well-ventilated area, separated from other storage.

Vapor Pressure：

25 mm Hg ( 20 °C)

Vapor Density：

1.27 (vs air)

Toxicity：

LC50 (15 min.) in rats, guinea pigs: 2689, 4327 ppm (Rosenholtz)

Flammability characteristics：

Nonflammable Gas

Safety Information

Packing level：

Hazard category：

Transport codes：

UN 1790

wgk germany：

hazard class code：

R26/27/28; R35

safety instructions：

S26-S36/37-S45-S7/9

RTECS Number：

MW7875000

Marks：

Storage features：

Store only in original container. Separated from food and feedstuffs and incompatible materials. See Chemical Dangers. Cool. Ventilation along the floor. Store in an area without drain or sewer access.

Stability/Shelf Life：

Stable. Hygroscopic. Incompatible with glass, alkali metals, light metals, alkaline earth metals

Precautionary statement(s)：

P260-P280-P303 + P361 + P353-P304 + P340 + P310-P305 + P351 + P338-P403 + P233

Hazard Statements：

H300 + H310 + H330-H314

Hydrofluoric acid Use and Manufacturing

Hydrogen fluoride is a chemical compound with the chemical formula HF. This colorless gas or liquid is the principal industrial source of fluorine, often as an aqueous solution called hydrofluoric acid. It thus is the precursor to many important compounds including pharmaceuticals and polymers (e.g. Teflon). HF is widely used in the petrochemical industry as a component of superacids. Hydrogen fluoride boils near room temperature, much higher than other hydrogen halides. Unlike other hydrogen halides, HF is lighter than air.Hydrogen fluoride is a highly dangerous gas, forming corrosive and penetrating hydrofluoric acid upon contact with moisture. The gas can also cause blindness by rapid destruction of the corneas.French chemist Edmond Frémy (1814–1894) is credited with discovering anhydrous hydrogen fluoride while trying to isolate fluorine, although Carl Wilhelm Scheele prepared hydrofluoric acid in large quantities in 1771, and this acid was known in the glass industry before then.

Computed Properties

Molecular Weight:20.0064
XLogP3:0.6
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:1
Exact Mass:20.006228194
Monoisotopic Mass:20.006228194
Heavy Atom Count:1
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

Calcium chloride

Sulfuric acid

Calcium fluoride

Downstream Products

Tetrafluoroboric acid

Lithium hexafluorophosphate

3,5-Bis(trifluoromethyl)benzene

Chlorodifluoromethane

Sodium fluoride

Aluminum fluoride

Price Analysis

Make your Hydrofluoric acid purchase based on the price and market insights! ECHEMI provides professional market insights with prices for you to make a better choice. Learn more on Hydrofluoric acid prices .

Data: 2026-10-06
Price: 16400.00Yuan/mt
Change: 0

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