Industry grade 98% Aluminium nitrate nonahydrate CAS 7784-27-2

1. Product Overview

Aluminium nitrate — aluminum(III) nitrate, supplied as the white, hygroscopic nonahydrate Al(NO₃)₃·9H₂O (CAS 7784-27-2) — is a highly water-soluble aluminum salt and a controlled oxidizing agent. Its central role in industry is as the clean precursor for high-purity alumina (Al₂O₃): thermal decomposition converts it to aluminum oxide of controlled purity and morphology, the foundation of the sol-gel route to nano-alumina, advanced ceramics, catalyst supports and sapphire. It is equally valued as an analytical aluminum source and standard, an oxidation and materials catalyst, a textile and leather processing auxiliary, and an aluminum-doping precursor for battery and electronic materials.

One salt, four core value propositions:

High-Purity Alumina Precursor (Core Application):

● clean thermal conversion to Al₂O₃ — the backbone of sol-gel nano-alumina and advanced ceramics;

Analytical Reagent & Aluminum Standard:

● high-purity aluminum source for standards, assays and laboratory analysis;

Catalyst & Materials Feedstock:

● alumina catalyst supports, oxidation catalysis and functional oxide synthesis;

Textile & High-Tech Processing Aid:

● aluminum mordant and tanning auxiliary; aluminum-doping precursor for battery/electronic materials.

2. Product Information (Quick Facts)

3. Chemistry & Structure

Aluminium nitrate is the aluminum(III) salt of nitric acid, Al(NO₃)₃, isolated commercially as the nonahydrate Al(NO₃)₃·9H₂O (MW 375.13). It is produced by dissolving aluminum oxide (or bauxite-grade alumina) in nitric acid and crystallizing. The salt is hygroscopic and melts at ≈ 73 °C in its own water of crystallization; on further heating it decomposes — losing water and evolving nitrogen oxides — to leave aluminum oxide. That clean decomposition to alumina is the basis of its use as a sol-gel and materials precursor. Its aqueous solutions are acidic; the nitrate group makes the solid an oxidizer (it can support combustion and reacts with reducing agents), so it is classified UN 1438, Class 5.1, PG III.

4. Key Features & Benefits

● Clean alumina route: direct thermal decomposition to high-purity Al₂O₃ of controlled morphology.

● High water solubility: fast solution preparation for sol-gel, dosing and analytical work.

● Sulfate- and chloride-free aluminum source: no anion interference in analysis and synthesis.

● Controlled oxidizer: mild, manageable oxidizing chemistry for process applications.

● Versatile precursor: alumina, catalyst supports, ceramics, battery and electronic materials.

● Flexible supply: 25 kg bags/drums, palletized; samples and custom packs available.

5. Main Applications

5.1 High-Purity Alumina & Advanced Ceramics Precursor (Core Application)

Aluminium nitrate is the classic water-soluble precursor for alumina and advanced oxide ceramics:

● Sol-gel synthesis: the standard Al₂O₃ source for nano-alumina, films and coatings;

● High-purity alumina: thermal decomposition route to 4N–5N alumina for optical and electronic uses;

● Sapphire and technical ceramics: controlled precursor for single-crystal and polycrystalline alumina;

● Refractories and abrasives: alumina feedstock for high-temperature materials.

5.2 Analytical Reagent & Aluminum Standard

● Aluminum standard solutions: primary source for ICP, AAS and colorimetric calibration;

● Laboratory reagent: general-purpose aluminum(III) salt for analysis and synthesis;

● Titrimetric and gravimetric work: aluminum content determination;

● Quality-control laboratories: standardized solutions for industrial QC.

5.3 Catalyst & Adsorbent Materials

● Alumina catalyst supports: precursor for high-surface-area γ-Al₂O₃ supports;

● Oxidation catalysis: aluminum nitrate catalysts and cocatalysts in organic synthesis;

● Adsorbents and molecular sieves: alumina-based adsorbent and zeolite synthesis;

● Petrochemical processing: alumina support chemistry for refinery catalysts.

5.4 Textile, Leather & Processing Auxiliaries

● Textile dyeing mordant: aluminum mordant for dye fixation in natural-fiber dyeing;

● Leather tanning: aluminum tanning auxiliary for chrome-free and combination tanning;

● Finishing and treatment baths: soluble aluminum dosing in processing;

● Water and process chemical dosing: aluminum supply in treatment formulations.

5.5 Battery & Electronic Materials Precursor

● Lithium battery materials: aluminum-doping precursor for NCM/LFP cathode chemistry;

● Solid electrolytes: precursor for LATP (Li₁₊ₓAl₃Ti₂₋ₓP₃O₁₂) and NASICON-type systems;

● Electronic ceramics: Al-doping and alumina layers for electronic components;

● Coatings and thin films: sol-gel alumina barrier and protective layers.

6. Packaging, Storage

Packaging (customizable):

● 25 kg PE-lined woven bags or fiber drums; 500/1,000 kg big bags;

Storage:

● Store in a cool, dry, well-ventilated area; keep containers tightly closed;

● Keep away from combustible materials, organic substances, reducing agents and food/feed;

● Protect from moisture and humidity; avoid prolonged contact with metal containers (corrosion).

7. Why Choose Jinan Future Chemical Co., Ltd.?

● Factory-direct supply: own production and sourcing capability, transparent pricing, no middleman markup;

● Stable quality: strict internal control, every batch tested (assay ≥ 98%, aluminum content, impurity metals, appearance), COA with every shipment;

● Application know-how: alumina, sol-gel and battery-material experience for technical support;

● Export experience: experienced in hazardous-goods (UN 1438 Class 5.1) documentation and compliant sea/air shipping

8. FAQ

Q1: What is aluminium nitrate used for?

Aluminium nitrate (nonahydrate) is used mainly as a clean, water-soluble precursor for high-purity alumina and advanced ceramics via thermal decomposition and sol-gel routes; as an analytical reagent and aluminum standard; as a catalyst and alumina catalyst-support precursor; as an aluminum mordant and leather tanning auxiliary; and as an aluminum-doping precursor for lithium-battery and electronic materials (e.g. LATP solid electrolytes). Its key advantages are high solubility, a sulfate/chloride-free aluminum(III) source, and a clean decomposition path to alumina.

Q2: Why is aluminium nitrate the preferred alumina precursor for sol-gel and high-purity ceramics?

Unlike alumina powder, aluminium nitrate dissolves molecularly in water, giving homogeneous solutions for sol-gel chemistry, impregnation and coating. On heating it decomposes cleanly to Al₂O₃ — without sulfate or chloride residues — so purity is carried directly into the oxide product. This combination (molecular dispersion + residue-free conversion) yields nano-alumina, films, catalyst supports and ceramics with controlled purity and microstructure, which is why it is the standard precursor for high-value alumina materials.

Q3: Aluminium nitrate vs. aluminium sulfate or chloride — which should I choose?

For analytical work, sol-gel alumina and high-purity ceramics, aluminium nitrate is preferred because it is sulfate- and chloride-free, leaving no interfering anions or corrosive chloride residues after conversion; it also decomposes cleanly to alumina. Aluminium sulfate and chloride are cheaper and more common for bulk water treatment and general processing, but they introduce sulfate/chloride chemistry that is undesirable in precision materials. Choose nitrate where purity, clean conversion and analytical cleanliness matter.