Product Description
Aluminum(III) oxide is also called aluminum oxide. In mineral form it is called corundum and is referred to as alumina in conjunction with mining and aluminum industries. Alumina exists in hydrated forms as alumina monohydrate, Al2O3? H2O and alumina trihydrate Al2O3?3H2O. The geologic source of aluminum is the rock bauxite, which has a high percentage of hydrated aluminum oxide. The main minerals in bauxite are gibbsite (Al(OH)3), diaspore (AlO(OH)), and boehmite (AlO(OH).
Occurs in nature in abundance; the principal forms are bauxites and laterites. The mineral corundum is used to produce precious gems, such as ruby and sapphire. Activated aluminas are used extensively as adsorbents because of their affinity for water and other polar molecules; and as catalysts because of their large surface area and appropriate pore sturcture. As adsorbents, they are used for drying gases and liquids; and in adsorption chromatography. Catalytic properties may be attributed to the presence of surface active sites (primarily OH- , O2- , and Al3+ ions). Such catalytic applications include sulfur recovery from H2S (Clauss catalysis); dehydration of alcohols, isomerization of olefins; and as a catalyst support in petroleum refining.
Product Parameters
| Aluminum oxide Chemical Properties |
| Melting point |
2040 °C(lit.) |
| Boiling point |
2980°C |
| density |
4 |
| vapor pressure |
17 mm Hg ( 20 °C) |
| refractive index |
1.765 |
| Fp |
2980°C |
| storage temp. |
-20°C |
| solubility |
Miscible with ethanol. |
| form |
powder |
| color |
White to pink |
| Specific Gravity |
3.97 |
| Odor |
Odorless |
| PH |
7.0±0.5 ( in H2O) |
| PH Range |
3.5 - 4.5 |
| Water Solubility |
INSOLUBLE |
Application
Used as analytical reagent, dehydration of organic solvents, adsorbent, organic reaction catalyst, grinding agent, polishing agent, raw material for aluminum smelting, refractory material.
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Packaging & Shipping
FAQ
Q1. Can I have a sample order for your products?
A: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.
Q2. What about the lead time?
A:Sample needs 3-5 days, mass production time needs 1-2 weeks.
Q3. How do you ship the goods and how long does it take to arrive?
A: We usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping also optional.
Q4. How to proceed an order for your products?
A: Firstly let us know your requirements or application.
Secondly We quote according to your requirements or our suggestions.
Thirdly customer confirms the samples and places deposit for normal order.
Fourthly We arrange the production.
Q5. Is it OK to print my logo on package?
A: Yes. Please inform us before our production and confirm the design firstly based on our sample.
Q6: Are you trading company or manufacturer?
A: We are chemical factory in China. So we can provide wholesale price.
Q7: What are your payment terms?
A: We can accept various payment methods, Western Union, T/T, Paypal, etc.
Q8: How about the delivery time?
A: The delivery time is about 7-20 days after confirming the payment. Delivery times vary from country to country. (excluding Chinese holidays)
Q9: What type of containers do your company's products use?
A: Our discreet packaging, good airtightness guarantees 100% of your package to pass through customs, generally aluminum foil bags, fluoride bottles, plastic steel drums, plastic drums or according to customer requirements, we will try our best to meet your requirements.
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