1341-49-7

Basic information

• Product Name: Ammonium hydrogen difluoride
• Synonyms: ETCHING POWDER;AMMONIUM BIFLUORIDE;Ammonium difluoride;AMMONIUM FLUORIDE, ACIDIC;AMMONIUM ACID FLUORIDE;AMMOMIUM FLUORIDE ACIDIC;AMMONIUM HYDROGEN DIFLUORIDE;AMMONIUM HYDROGEN FLUORIDE
• CAS NO: 1341-49-7
• Molecular Formula: F2H5N
• Molecular Weight: 57.04
• EINECS: 215-676-4
• Product Categories: Industrial/Fine Chemicals;Inorganic Chemicals;Inorganics;metal halide
• Mol File: 1341-49-7.mol

Chemical Properties

• Melting Point: 125 °C(lit.)
• Boiling Point: 230 °C
• Flash Point: 238°C
• Appearance: White/Solid
• Density: 1,5 g/cm3
• Vapor Pressure: 19.4mmHg at 25°C
• Storage Temp.: Store at room temperature.
• Solubility: 630g/l
• PKA: 6.3[at 20 ℃]
• Water Solubility: 630 g/L (20 ºC)
• Sensitive: Hygroscopic
• Stability: hygroscopic
• Merck: 14,498
• CAS DataBase Reference: Ammonium hydrogen difluoride(CAS DataBase Reference)
• NIST Chemistry Reference: Ammonium hydrogen difluoride(1341-49-7)
• EPA Substance Registry System: Ammonium hydrogen difluoride(1341-49-7)

Safety Data

• Hazard Codes: T,C
• Statements: 25-34
• Safety Statements: 22-26-37-45-36/37/39
• RIDADR: UN 1727 8/PG 2
• WGK Germany: 1
• RTECS: BQ9200000
• F: 3-9
• TSCA: Yes
• HazardClass: 8
• PackingGroup: II
• Hazardous Substances Data: 1341-49-7(Hazardous Substances Data)

Usage

Chemical Properties

white scales or flakes, also referred to asammonium hydrogen fluoride, anunonium difluoride and anunonium acid fluoride.

Chemical Properties

Ammonium bifluoride.

Physical properties

Orthorhombic or tetragonal crystals; etches glass; deliquescent; density 1.50 g/cm3; refractive index 1.390; melts at 125.6°C; very soluble in water; slightly soluble in alcohol.

Uses

Ammonium hydrogen fluoride is used as a chemical reagent in analysis and an antiseptic. It is also used in ceramics, electroplating, component of glass etchants as well as food processing equipment disinfectant. It acts as an intermediate in the production of hydrofluoric acid from hexafluorosilicic acid.

Uses

In manufacture of Mg and Mg alloys; in brightening of Al; for purifying and cleansing various parts of beer-dispensing apparatus, tubes, etc., sterilizing dairy and other food equipment; in glass and porcelain industries; as mordant for aluminum; as a "sour" in laundering cloth. In lab production of HF.

General Description

Ammonium bifluoride solution is the white crystalline solid dissolved in water. Ammonium hydrogen difluoride is corrosive to metals and tissue. Ammonium hydrogen difluoride is used in ceramics.

Air & Water Reactions

Dissolves in water and forms a weak solution of hydrofluoric acid.

Reactivity Profile

AMMONIUM BIFLUORIDE reacts violently with bases. In presence of moisture will corrode glass, cement, and most metals. Flammable hydrogen gas may collect in enclosed spaces. Do not use steel, nickel, or aluminum containers [USCG, 1999].

Hazard

Corrosive to skin.

Health Hazard

TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Fire Hazard

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.

Flammability and Explosibility

Nonflammable

Safety Profile

Caustic poison and strong irritant by all routes. See also HYDROFLUORIC ACID. When heated to decomposition it emits very toxic fumes of F-, NO,, and NH3.

Potential Exposure

It is used as a sterilizer, in dairy and brewery operations; in the ceramic, glass, and electroplating industries; as a laundry sour.

Shipping

Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim warm and quiet. Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Medical observation is recommended for 24 to 48 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized paramedic may consider administering a drug or other inhalation therapy.

Incompatibilities

Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. In the presence of moisture corrodes concrete, metals, glass.

Waste Disposal

May be buried in a specially designated chemical landfill. Aqueous wastes may be reacted with an excess of lime followed by lagooning and either recovery or land disposal of the separated calcium fluoride.

InChI:InChI=1/FH.H3N/h1H;1H3/p+1

Upstream product

• 1336-21-6 Ammonium hydroxide 
• 573-58-0 Congo Red 

Downstream Products

• 134150-01-9 4-Propylphenylboronic acid 
• 134150-03-1 4'-BROMO-4-(TRIFLUOROMETHOXY)BIPHENYL 
• 13415-00-4 2-Pyrrolidinecarboxamide,1-methyl-4-propyl-,D-cis-(8CI) 
• 134150-51-9 FMOC-TYR(PO3BZL2)-OH 
• 134151-61-4 4,4'-[(1,2,3,3,4,4-HEXAFLUOROCYCLOBUTANE-1,2-DIYL)BIS(OXY)]DIBENZOIC ACID 
• 134151-65-8 4,4'-[(1,2,3,3,4,4-HEXAFLUOROCYCLOBUTANE-1,2-DIYL)BIS(OXY)]BISPHENOL 
• 134151-66-9 Benzoic acid, 4-[(1,2,2-trifluoroethenyl)oxy]- 
• 134151-67-0 4-(TRIFLUOROVINYLOXY)BENZOYL CHLORIDE 
• 134151-77-2 1-BroMo-4-(trifluorovinyloxy)benzene 
• 134152-11-7 chlamydosporal 
• 134152-12-8 15-propionat-prostaglandin F2alpha-isopropyl ester 
• 134152-13-9 2,6-difluorophenyl-N-tert-butylnitrone 
• 134152-14-0 glutaminyl-valyl-valyl-S-(3-nitro-2-pyridinesulfenyl)cysteinyl-glycinamide 
• 134152-15-1 Homotaurine N,N-Diacetic Acid 

Related news

Original ArticleSynthesis of thorium tetrafluoride (ThF4) by Ammonium hydrogen difluoride (cas 1341-49-7) (NH4HF2)08/30/2019

The present study aims to investigate the fluorination of thorium oxide (ThO2) by ammonium hydrogen difluoride (NH4HF2). Fluorination was performed at room temperature by mixing ThO2 and NH4HF2 at different molar ratios, which was then left to react for 20 days. Next, the mixtures were analyzed ...detailed