Ammonium hydrogen difluoride
- Product Name
- Ammonium hydrogen difluoride
- CAS No.
- 1341-49-7
- Chemical Name
- Ammonium hydrogen difluoride
- Synonyms
- AMMONIUM BIFLUORIDE;NH4HF2;Ammonium Biflouride;AMMONIUM HYDROGEN FLUORIDE;en fL;Flammon;ETCHING POWDER;Ammonium difluoride;AMONIUM BI FLUORIDE;acidammoniumfluoride
- CBNumber
- CB0273686
- Molecular Formula
- F2H5N
- Formula Weight
- 57.04
- MOL File
- 1341-49-7.mol
Ammonium hydrogen difluoride Property
- Melting point:
- 125 °C(lit.)
- Boiling point:
- 230 °C
- Density
- 1,5 g/cm3
- vapor pressure
- 1 hPa (20 °C)
- Flash point:
- 238°C
- storage temp.
- Store at room temperature.
- solubility
- 630g/l
- form
- Solid
- pka
- 6.3[at 20 ℃]
- color
- White
- Specific Gravity
- 1.5
- PH
- 2 (5.7g/l, H2O, 20℃)
- Odor
- acidic odor
- Water Solubility
- 630 g/L (20 ºC)
- Sensitive
- Hygroscopic
- Merck
- 14,498
- Exposure limits
- ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 - Stability:
- hygroscopic
- InChIKey
- KVBCYCWRDBDGBG-UHFFFAOYSA-N
- CAS DataBase Reference
- 1341-49-7(CAS DataBase Reference)
- EPA Substance Registry System
- Ammonium bifluoride (1341-49-7)
Safety
- Hazard Codes
- T,C
- Risk 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
- Hazard Note
- Toxic/Corrosive/Hygroscopic
- TSCA
- Yes
- HazardClass
- 8
- PackingGroup
- II
- HS Code
- 28261910
- Hazardous Substances Data
- 1341-49-7(Hazardous Substances Data)
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H301Toxic if swalloed
H314Causes severe skin burns and eye damage
- Precautionary statements
-
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P270Do not eat, drink or smoke when using this product.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- AX1235
- Product name
- Ammonium Bifluoride
- Purity
- Practical
- Packaging
- 500g
- Price
- $113
- Updated
- 2024/03/01
- Product number
- AX1235
- Product name
- Ammonium Bifluoride
- Purity
- Practical
- Packaging
- 12kg
- Price
- $624
- Updated
- 2024/03/01
- Product number
- 224820
- Product name
- Ammonium hydrogen difluoride
- Purity
- reagent grade, 95%
- Packaging
- 25g
- Price
- $59.9
- Updated
- 2024/03/01
- Product number
- 224820
- Product name
- Ammonium hydrogen difluoride
- Purity
- reagent grade, 95%
- Packaging
- 2.5kg
- Price
- $526
- Updated
- 2024/03/01
- Product number
- 014660
- Product name
- Ammonium hydrogen fluoride, tech. 95%
- Packaging
- 500g
- Price
- $56.4
- Updated
- 2023/06/20
Ammonium hydrogen difluoride Chemical Properties,Usage,Production
Chemical Properties
Ammonium bifluoride.
Chemical Properties
white scales or flakes, also referred to asammonium hydrogen fluoride, anunonium difluoride and anunonium acid fluoride.
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
Non flammable
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.
Properties and Applications
Ammonium hydrogen difluoride (NH4HF2) is an inexpensive reagent compared to known anticaries fluorides such as NaF, SnF2, etc. In addition, ammonium bifluoride is reported as a potent inhibitor of caries-like lesion formation in vitro. For instance, Tyler and Poole have studied fluoride uptake by human surface enamel from ammonium bifluoride in vitro. They noticed a reduction in the penetration of caries-like lesions in the case of specimens treated with 1% aq. NH4HF2. A study reports the fluorination of hydroxyapatite powder using ammonium hydrogen difluoride as a fluorinating agent by three different routes, viz., solid-state method, reflux method, and pH cycle method. The FT-IR and powder XRD results confirm the inter-diffusion of ‘F’ and ‘OH’- ions and the formation of homogeneous products of partially fluorinated hydroxyapatite. Compared to many other fluoride sources, NH4HF2 has the advantages of solubility and cost[1].
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.
References
[1] V. Geetha, G. Buvaneswari. “Ammonium hydrogen difluoride induced fluorination of hydroxyapatite.” Materials Research Bulletin 45 12 (2010): Pages 1866-1870.
Ammonium hydrogen difluoride Preparation Products And Raw materials
Raw materials
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View Lastest Price from Ammonium hydrogen difluoride manufacturers
- Product
- Ammonium hydrogen difluoride 1341-49-7
- Price
- US $9.90/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 10 mt
- Release date
- 2024-10-31
- Product
- Ammonium Bifluoride NH?HF? 1341-49-7
- Price
- US $0.00-0.00/BAG
- Min. Order
- 1BAG
- Purity
- ≥98%
- Supply Ability
- 1000 Tons
- Release date
- 2024-10-13
- Product
- Ammonium Bifluoride 1341-49-7
- Price
- US $0.00-0.00/BAG
- Min. Order
- 1BAG
- Purity
- ≥98%
- Supply Ability
- 1000 Tons
- Release date
- 2024-10-14