Buy AMT Powder – Ammonium Metatungstate High-Purity Industrial Chemical
Introduction
Ammonium metatungstate (AMT), chemical formula (NH₄)₆[H₂W₁₂O₄₀]·xH₂O, is a key intermediate in tungsten hydrometallurgical processes. It serves as a high-purity tungsten source for producing tungsten oxides, catalysts, and specialized materials in petrochemical, aerospace, ceramic, and electronic industries. AMT’s superior water solubility compared to ammonium paratungstate (APT) allows for efficient preparation of concentrated tungstate solutions. Its crystalline structure involves α-Keggin-type metatungstate anions arranged in close-packed or hexagonal-rod formations, stabilized by ammonium ions and crystal water molecules through hydrogen bonding.
Key Features & Benefits
High Purity & Crystallinity: Uniform spherical crystals with high crystallinity and purity.
Excellent Water Solubility: Dissolves up to ~300 g per 100 g water at 20°C, facilitating aqueous processing.
Thermal Stability: Stable at room temperature; decomposes gradually above 100°C releasing crystal water, fully decomposing to WO₃ above 400–500°C.
Chemical Reactivity: Participates in acid-base and redox reactions, useful in catalyst synthesis and tungsten oxide production.
Low Electrical Conductivity: Suitable for high-purity electronic materials.
Non-Hygroscopic: Dry and stable under normal storage conditions.
Product Specifications
| Parameter | Details |
|---|---|
| Chemical Name | Ammonium Metatungstate (AMT) |
| Chemical Formula | (NH₄)₆[H₂W₁₂O₄₀]·xH₂O |
| Appearance | White to slightly yellowish crystalline powder |
| Particle Size | 10–50 micrometers |
| Density | 2.3–2.8 g/cm³ |
| Solubility | Highly soluble in water (~300 g/100 g at 20°C) |
| pH of Solution | Weakly acidic, 3.5–5.0 |
| Thermal Stability | Decomposes >100°C; complete decomposition at 400–500°C |
| Storage | Store in cool, dry place away from moisture and light |
Applications & Usage
AMT powder is widely used in:
Production of tungsten oxides and tungsten metal powders.
Catalyst manufacturing for petrochemical and chemical industries.
Fabrication of tungsten alloys and electronic materials.
Preparation of fire-resistant fabrics and heat-insulating masterbatches.
Research and development in materials science and inorganic chemistry.
Purity & Testing
X-Ray Diffraction (XRD): Confirms crystal structure and phase purity.
Thermogravimetric Analysis (TGA): Assesses thermal stability and hydration levels.
Particle Size Analysis: Ensures uniformity for consistent processing.
Certificate of Analysis (CoA): Provided with each batch for quality assurance.
Safety & Handling Guidelines
Handle with appropriate PPE including gloves and eye protection.
Avoid inhalation of dust; use in well-ventilated areas or fume hoods.
Store in sealed containers to prevent moisture absorption.
Dispose of according to local environmental and safety regulations.
Global Shipping & Discreet Delivery
Fast, reliable worldwide shipping with tracking and delivery confirmation.
Packaged in secure, moisture-resistant, plain packaging to maintain product integrity.
Typical delivery within 3–7 business days depending on destination.
Why Choose Us?
Trusted supplier of high-purity tungsten compounds and industrial chemicals.
Comprehensive quality control and batch-specific Certificates of Analysis.
Fast order processing and express shipping options.
Dedicated customer support for technical inquiries and order assistance.
Commitment to secure, discreet packaging and customer privacy.
Legal & Safety Disclaimer
AMT powder is intended for industrial and laboratory research use only. It is not for human or veterinary consumption. Buyers must comply with all applicable laws and regulations. The supplier disclaims liability for misuse or unauthorized application.
Frequently Asked Questions (FAQ)
1. What is AMT powder used for?
AMT is used as a tungsten source in catalyst production, electronics, alloys, and chemical manufacturing.
2. How soluble is AMT in water?
AMT dissolves approximately 300 g per 100 g of water at 20°C, making it highly soluble.
3. What is the thermal stability of AMT?
It begins to lose water around 100–150°C and decomposes fully to WO₃ above 400–500°C.
4. How should AMT be stored?
Store in a cool, dry place, protected from moisture and light.
5. Is shipping discreet?
Yes, all orders ship in plain, secure packaging with tracking for confidentiality.
Purchase high-purity AMT (Ammonium Metatungstate) powder, a vital tungsten compound used in catalysts, electronics, and chemical industries. White crystalline powder with excellent water solubility. Discreet worldwide shipping.
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