CAS Number 1344-28-1 | Alumina
Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 1344-28-1, Whether you call it Aluminum Oxide or Alumina you can be assured the products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.
α-ALUMINA (ALUNDUM)
ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Aluminum metal and insoluble compounds. See annual publication for most recent information. Gilks, B. and Churg, A.: Aluminum-induced pulmonary fibrosis: do fibers play a role? Am. Rev. Respir. Dis. 136(1): 176-179, 1987.
New 10 lb Aluminum CO2 Cylinder | Gas Cylinder Source
10 lb. Aluminum CO2 Cylinder. New 10 lb. aluminum CO2 cylinder with CGA320 valve. A great mid-size and high-performance CO2 tank. Premium Construction. Brushed finish on thick, durable cylinder walls. Engineered alloy designed for high strength and great low temp performance. Quality Features
Sulfur Dioxide Basics | US EPA
Sulfur dioxide (SO2) is one of a group of highly reactive gasses known as "oxides of sulfur," and are emitted into the air as result of fossil fuel combustion and other industrial processes. ... EPA's national ambient air quality standards for SO 2 are designed to protect against exposure to the entire group of sulfur oxides (SO x ...
Impurity Migrations in Aluminum Reduction Process and Quality …
Higher quality primary aluminum is increasingly required for high-performance alloy products. The influence of the impurity contents in such raw materials as prebaked anodes, alumina, etc. and impact of the process operations on the quality of primary aluminum are discussed in detail in this paper. The results show that Fe and Si …
Aluminum Oxide: Properties, Uses, and Benefits
Aluminum oxide is frequently used as a polishing and etching agent in finishing services. Although there are several materials available that are made specifically for this usage, aluminum oxide has unique qualities that set it apart from other finishing service methods. You will discover everything about aluminum oxide, its properties, …
Aluminium dioxide (alumina) Formula
Formula and structure: The aluminium oxide chemical formula is Al 2 O 3.Its molecular weight is 101.96 g mol-1.This oxide is formed by the cation aluminum Al +3 and the anion oxygen O-2.Due Al 2 O 3 is extracted from different mineral in nature, there is not a unique structure for fitting the molecules in this compound, so it can have octahedral, hexagonal …
(PDF) Nano aluminum oxides as adsorbents in water
Aluminium dioxide is the main class of nanometal oxides used in different applications depending on the properties of the particles, which can control many chemical processes such as in imaging ...
Formation of Aluminum Matrix Composite Material with …
The effect of processing contact of molten aluminum with silicon dioxide on chemical composition and structure of crystallizing metal is studied in this work. The object used for study was aluminum grade A0, and refractory tubes of optical quality fuzed quartz. The internal tube diameter was 5 mm. Refractory tubes of corundum ceramic …
Investigation of high-quality-factor aluminum nitride MEMS …
Four main types of piezoelectric micromachined cantilever structure have been reported to date, and these are shown in Fig. 1.The most common structure is a silicon-based piezoelectric cantilever, which shows a relatively high quality factor (Q). 13 Considering the conductivity of silicon, for this kind of resonator, either a silicon …
High Quality Aluminum Oxide Passivation Layer for
We investigated hydrogenated aluminum oxide (a-Al 1-x O x:H) as a high quality rear surface passivation layer of crystalline silicon solar cells.The a-Al 1-x O x:H films were deposited by plasma-enhanced chemical vapor deposition (PECVD) using a mixture of trimethylaluminum (TMA), carbon dioxide (CO 2), and hydrogen (H 2) at a …
aluminium oxide
aluminium oxide. Formula: Al 2 O 3. Molecular weight: 101.9613. CAS Registry Number: 1344-28-1. Information on this page: Condensed phase thermochemistry data. …
National Primary Drinking Water Regulations | US EPA
It is used to indicate water quality and filtration effectiveness (such as whether disease-causing organisms are present). ... Chlorine dioxide (as ClO 2) MRDLG=0.8 1: MRDL=0.8 1: Anemia; infants and young children: nervous system effects ... Discharge from metal refineries and agricultural chemical factories. …
Abnormal behavior of silica doped with small amounts of aluminum …
Silicon dioxide is the main constituent of the earth's crust and mantle 1.It is also a key engineering material in many modern industries and is widely used for the fabrication of ...
Can You Mig Weld Aluminum with Argon/CO2 Mix
For aluminum welding, argon & co2 (carbon dioxide) mix is not the better option. For Mig welding aluminum, ... leading to poor weld quality. Arc Stability: Aluminum welding requires a stable arc for precise control of the welding process. CO2 can produce a less stable arc compared to gasses like argon or helium, potentially leading to ...
aluminium sodium dioxide
aluminium sodium dioxide. Formula: AlNaO 2; Molecular weight: 81.9701; CAS Registry Number: 1302-42-7; Information on this page: Condensed phase thermochemistry data; References; Notes; ... uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound ...
A High-Quality-Factor Aluminum Nitride Resonator with Silicon Dioxide
Abstract: A high-quality-factor composite structure resonator is presented, which consists of a silicon dioxide (SiO 2) composite structure driven by an aluminum nitride (AlN) transducer positioned underneath.With the kinetic energy primarily concentrated in the upper SiO 2 composite layer, the series quality factor (Q s) of this resonator is …
Impact of Metal Mining on Air Quality
Aluminum smelters, for example, release two tons of carbon dioxide and 1.4 kilos of perfluorocarbons (PFCs) for every ton of aluminum produced. PFCs have up to 9,200 times the heat-trapping potential of carbon and will linger in the atmosphere for tens of thousands of years.
Aluminum dioxide for Sale from Quality Suppliers
ECHEMI supplies 63 top grade Aluminum dioxide products from 61 reliable manufactures. Find Aluminum dioxide you need according to certification and product grade and inquiry now on ECHEMI.
New 2.5 lb Aluminum CO2 Cylinder | Gas Cylinder Source
High-strength, corrosion-resistant aluminum. Engineered alloy designed for high strength and great low temp performance. Quality Features. 4.4″ diameter x 14″ height (with valve) Note: due to differences between manufacturers, cylinder height may vary by +/- several inches. DOT-stamped and TC-approved; Certified or hydro-tested within 18 months
Metals | Free Full-Text | High- and Ultra-High-Purity Aluminum…
Aluminum and aluminum-based alloys have been used for many years. In view of the increase in material purity requirements of advanced technology products, research regarding high-purity aluminum has gained significant attention in recent years. In this review, we seek to describe the fundamental purification principles and the …
aluminium oxide
aluminium oxide. Formula: Al 2 O 3; Molecular weight: 101.9613; CAS Registry Number: 1344-28-1; Information on this page: Condensed phase thermochemistry data; References; ... (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound ...
This Simple Material Could Scrub Carbon Dioxide From …
How can we remove carbon dioxide, a greenhouse gas, from fossil-fuel power plant exhaust before it ever reaches the atmosphere? New findings suggest a promising answer lies in a simple, economical and potentially reusable material analyzed at the National Institute of Standards and Technology (NIST), where scientists from several …
Understanding the Hardness and Material Properties of Aluminum …
Aluminum Oxide vs. Titanium Dioxide. When comparing Aluminum Oxide to Titanium Dioxide, several significant differences emerge. Aluminum Oxide (Al2O3) is renowned for its hardness, being one of the most durable materials available for abrasive purposes. It also has a high refractory temperature, making it well-suited for high …
(PDF) Synthesis and applications of nano aluminum dioxides
This review provides an overview of a luminium dioxide nanoparticles' synthesis, characterization, and applications in various methods. Aluminium dioxide is …
How aluminium is produced
Full aluminium production process - bauxite mining, alumina production, primary aluminium production, aluminium alloys production, aluminium recycling ... Bauxite is regarded as high quality if it contains more than 50% of aluminium oxide. ... When hydroelectric power is used just 4 tonnes of carbon dioxide is emitted into the …
A major water quality problem in smolt farms: combined …
Mean respiration frequency was significantly increased both in the medium and high carbon dioxide groups compared to the control group (Fig. 1a; p<0.05).In the medium and high carbon dioxide groups (low pH), the mean gill aluminium deposition was significantly higher than the levels in the control group (Fig. 1b; p<0.05).The main gill …
Aluminum Oxide
Aluminum oxide is an electrical insulator but has a relatively high thermal conductivity ((30, W m^{-1} K^{-1})) for a ceramic material. It is thus used as insulating material in power electronics. Aluminum oxide is responsible for resistance of metallic aluminum to weathering.
New 5 lb Aluminum CO2 Cylinder | Gas Cylinder Source
5 lb. Aluminum CO2 Cylinder. New 5 lb. aluminum CO2 cylinder with a new CGA320 valve. The industry standard mid-size CO2 tank that combines top performance with easy portability. Aluminum cylinder is up to 40% lighter than the same in steel. CO2 tank is finished with an attractive and durable brushed exterior.