MERCURY(I) FLUORIDE Chemical Properties

Melting point:

570°C

Boiling point:

decomposes at 570℃ [MER06]

Density 

8.73 g/mL at 25 °C(lit.)

solubility 

reacts with H2O

form 

Powder

color 

white

Specific Gravity

8.73

Water Solubility 

Hydrolyzes in water

Solubility Product Constant (Ksp)

pKsp: 5.51

Exposure limits

ACGIH: TWA 0.025 mg/m3; TWA 2.5 mg/m3 (Skin)
NIOSH: IDLH 10 mg/m3; IDLH 250 mg/m3; TWA 0.05 mg/m3; TWA 2.5 mg/m3; Ceiling 0.1 mg/m3

CAS DataBase Reference

13967-25-4(CAS DataBase Reference)

Safety Information

Hazard Codes 

T+,N,T

Risk Statements 

26/27/28-33-50/53

Safety Statements 

13-28-45-60-61

RIDADR 

UN 2025 6.1/PG 2

WGK Germany 

3

Hazard Note 

Toxic

HazardClass 

6.1

PackingGroup 

II

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

MERCURY(I) FLUORIDE Usage And Synthesis

Description

Mercury(I) fluoride or mercurous fluoride, Hg2F2, consists of small yellow cubic crystals, which turn black when exposed to light. Mercury(I) fluoride is formed by the reaction of mercury(I) carbonate with hydrofluoric acid.
Hg2CO3 + 2HF→Hg2F2 +CO2 +H2O

Chemical Properties

small, yellow cub crystal(s); blackens in light; preparation by reaction of Hg2CO3 and HF [MER06]

Uses

Mercury(I) fluoride is used as antiseptic. It is used in the Swarts reaction to convert alkyl halides into alkyl fluorides.

Preparation

The wet Hg2CO3 is added in small portions and with constant stirring to 40% hydrofluoric acid solution contained in a platinum dish. A yellow powder of Hg2F2 settles out. The addition of Hg2CO3 is continued as long as CO2 is vigorously evolved; the highly dilute supernatant hydrofluoric acid is then poured off and a new portion of 40% hydrofluoric acid solution is added. The resulting mixture is evaporated to dryness on a water bath. The product is then pulverized and heated for 2-3 hours in a drying oven at 120-150°C. The product is then immediately poured into copper containers and vacuum-sealed.

MERCURY(I) FLUORIDE(13967-25-4)Related Product Information

• MERCURY(II) SULFATE
• MERCURIC BROMIDE
• MERCUROUS NITRATE
• PHENYLMERCURIC ACETATE
• Mercuric Oxide
• MERCURIC ACETATE
• TETRAKIS(ACETOXYMERCURI)METHANE
• MERCURIC CYANIDE
• MERCUROUS CHLORIDE
• MERCURY(II) TRIFLUOROMETHANESULFONATE
• MERCURY(II) IODIDE
• MERCURY(II) PERCHLORATE HYDRATE
• METHYLMERCURY(II) HYDROXIDE
• Mercury chloride
• Mercury nitrate monohydrate
• Mercury
• MERCURY(II) FLUORIDE,MERCURY(II) FLUORIDE 97%,Mercury(II)fluoride,98%,Mercury(II)fluoride97%
• MERCURY(I) FLUORIDE