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Emery

Emery structure

CAS No:
12415-34-8
Chemical Name:
Emery
Synonyms:
Emery

Description

Emery is an odorless, white, crystalline powder. Natural aluminum oxide. Very high melting and hard. Used for polishing, grinding, and abrasive operations. An inhalation hazard when present as a dust.|An oxide of aluminum, occurring in nature as various minerals such as bauxite, corundum, etc. It is used as an adsorbent, desiccating agent, and catalyst, and in the manufacture of dental cements and refractories.

Emery Basic Attributes

Molecular Weight：

101.961 g/mol

Exact Mass：

101.947821 g/mol

EC Number：

603-397-4

DSSTox ID：

DTXSID60108798

Characteristics

PSA：

43.4 Å²

Boiling Point：

decomposes

Vapor Pressure：

0 mmHg (approx)

Air and Water Reactions：

No rapid reaction with air No rapid reaction with water

Reactive Group：

Non-Redox-Active Inorganic Compounds

Reactivity Profile：

EMERY has only only low chemical reactivity. May react as a base with very strong acids

Safety Information

RTECS Number：

GN0231000

GHS Classification：

|Danger|H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation]|P260, P261, P264, P270, P271, P280, P304+P340, P305+P351+P338, P312, P314, P337+P313, P403+P233, P405, and P501

Personal Protective Equipment：

Skin: No recommendation is made specifying the need for personal protective equipment for the body. Eyes: No recommendation is made specifying the need for eye protection. Wash skin: No recommendation is made specifying the need for washing the substance from the skin (either immediately or at the end of the work shift). Remove: No recommendation is made specifying the need for removing clothing that becomes wet or contaminated. Change: No recommendation is made specifying the need for the worker to change clothing after the work shift. (NIOSH, 2016)|(See protection codes)

Drug Information

Health Hazards：

Exposure Routes: inhalation, ingestion, skin and/or eye contact Symptoms: Irritation eyes, skin, respiratory system Target Organs: Eyes, skin, respiratory system (NIOSH, 2016)

First Aid：

Eye: If this chemical contacts the eyes, immediately wash the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately. Contact lenses should not be worn when working with this chemical. Breathing: If a person breathes large amounts of this chemical, move the exposed person to fresh air at once. Other measures are usually unnecessary. Swallow: If this chemical has been swallowed, get medical attention immediately. (NIOSH, 2016)|(See procedures)

MeSH Entry Terms：

Alumina

Exposure Routes：

inhalation, ingestion, skin and/or eye contact

Symptoms：

irritation eyes, skin, respiratory system

Target Organs：

Eyes, skin, respiratory system

Emery Use and Manufacturing

Uses

Bauxite is a naturally occurring, heterogeneous material composed primarily of one or more aluminum hydroxide minerals, plus various mixtures of silica, iron oxide, titania, aluminosilicate, and other impurities in minor or trace amounts. The principal aluminum hydroxide minerals found in varying proportions with bauxites are gibbsite and the polymorphs boehmite and diaspore. Bauxites are typically classified according to their intended commercial application: abrasive, cement, chemical, metallurgical, refractory, etc. The bulk of world bauxite production (approximately 85%) is used as feed for the manufacture of alumina via a wet chemical caustic leach method commonly known as the Bayer process. Subsequently, the majority of the resulting alumina produced from this refining process is in turn employed as the feedstock for the production of aluminum metal by the electrolytic reduction of alumina in a molten bath of natural or synthetic cryolite (Na3AlF6), the all-Héroult process.|2010 | 2011 | 2012 |2013 |2014 |2015 |2016 |2017 |2018 | 2019 | 2020 |2021|2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 |

Use Classification：

Cosmetics -> Abrasive; Opacifying; Viscosity controlling

Computed Properties

Molecular Weight:101.961
Hydrogen Bond Acceptor Count:3
Exact Mass:101.947821
Monoisotopic Mass:101.947821
Topological Polar Surface Area:43.4
Heavy Atom Count:5
Complexity:34.2
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes