Overview
Ammonium fluoride (CAS 12125-01-8 ), also referenced industrially as NH4F, is an inorganic fluoride salt used as a buffering agent, surface treatment chemical, and flame retardant across several manufacturing sectors.
Its controlled fluoride release makes it effective in processes requiring precise pH management or selective etching action. In electronics manufacturing, it is used in semiconductor wet etching and wafer cleaning formulations.
Controlled oxide removal is critical to circuit integrity in these high-tech applications. Textile and leather processors apply it as a mordant and surface conditioner to improve dye uptake and substrate uniformity.
In paper manufacturing, it functions as a flame retardant additive, reducing combustibility in treated paper products. Building and construction applications include use in masonry treatments and cement formulations.
Fluoride-based buffering aids surface hardening and adhesion in these industrial building materials. Ammonium fluoride is supplied as a white crystalline powder or in aqueous solution form for various uses.
Standard technical and industrial grades are the most commonly available, with purity levels typically ranging from 98% upward for solid material. Bulk quantities are available for industrial procurement.
Smaller packaging options are also maintained for laboratory and specialty formulation use. This ensures that both large-scale manufacturers and research facilities can access the necessary chemical volumes.
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Physical Properties
| Melting Point | 238 °C |
| Boiling Point | 65°C/760mmHg |
| Density | 1.015 g/cm³ |
| Appearance | Ammonium fluoride is a white crystalline solid. |
| Color | White |
| Odor | Odorless |
| Form | Powder/Solid |
| Water Solubility | soluble |
| Vapor Pressure | 0Pa at 25℃ |
| pH | 6 (50g/l, H2O, 20℃) |
| Log P | -4.37 at 25℃ |
Safety & Handling
Danger GHS06 GHS05 GHS07 GHS08 Hazard Statements H301 Toxic if swallowed H311 Toxic in contact with skin H314 Causes severe skin burns and eye damage H318 Causes serious eye damage H319 Causes serious eye irritation H331 Toxic if inhaled H335 May cause respiratory irritation H372 Causes damage to organs through prolonged or repeated exposure H373 May causes damage to organs through prolonged or repeated exposure Precautionary Statements P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P262 Do not get in eyes, on skin, or on clothing. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P316 Get emergency medical help immediately. P317 Get emergency medical help. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P363 Wash contaminated clothing before reuse. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P316 Get emergency medical help immediately. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P361+P364 Take off immediately all contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P301+P330+P331 Rinse mouth. Do NOT induce vomiting. P302+P361+P354 IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 28261910 |
| UN Number | 2505 |
| ADR Class | 6.1 |
| Packing Group | III |
| Storage Class | 6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects |
| WGK (Germany) | 1 |
Other Names
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Chemical Properties
- CAS Number
- 12125-01-8
- EC Number
- 235-185-9
- Mol. Weight
- 37.037
- HS Code
- 28261910
- Category
- Salts & Minerals