Yttrium oxide

HCID 159374

Notes Reactions

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Basic information

CAS: 11130-29-3
Standard SMILES: [O-2].[O-2].[O-2].[Y+3].[Y+3]
InChIKey: RUDFQVOCFDJEEF-UHFFFAOYSA-N
Molecular formula: O3Y2
Average molar mass: 225.81 g/mol
Monoisotopic mass: 225.79644046

Overview

molecular formula Y2-O3

Names & identifiers

Preferred name: Yttrium oxide
IUPAC: tris(oxygen(2-));bis(yttrium(3+))
English name: Yttrium oxide
Molecular formula: O3Y2
Molecular weight: 225.81

Names & synonyms

Yttrium oxideYttrium(III) oxideYttriaYttrium trioxideDiyttrium trioxideYttrium(3+) oxide11130-29-3EINECS 234-382-7EINECS 215-233-5X8071685XTYO 3-245YTTRIUM OXIDE (GENERIC)

Show more names

YTTRIUMOXIDESYttrium(Iii) Oxide, Reacton (Reo)Y203 AY203 BY203 CY203 ATyo3-245Yttriumoxid

UNII-X8071685XTEC 215-233-5Yttrium OxydatumRefChem:58010DTXSID101014558215-233-5234-382-71314-36-9

Database identifiers

CAS: 11130-29-3、12036-00-9、1314-36-9
PubChem CID: 159374
DTXSID: DTXSID5051573
UNII: X8071685XT
EC Number: 215-233-5、234-382-7

Properties

Computed structural properties

Topological polar surface area: 3 Å²
Hydrogen bond donors: 0
Hydrogen bond acceptors: 3
Rotatable bonds: 0
Heavy atoms: 5
Formal charge: 0
Complexity: 0

Experimental & physicochemical properties

Chemical ClassesMetals -> Rare Earth Metals

SpringerMaterials Propertieselectron density of states

Density4.84 @25 °C

Melting Point2410 °C

Food Contact SubstancesFCS -> FDA Inventory of Food Contact Substances Listed in 21 CFR

Physical Description · 2 items

CBI; Dry Powder; Dry Powder; Other Solid

White solid insoluble in water; [Sax]

Physicochemical properties

Melting point: 2410 °C · 2410 °C
Boiling point: 81 · 81-83 °C
Density: 5.01 g/mL · 5.01 g/mL at 25 °C(lit.)
Flash point: 12 °C · 12 °C
storage temp.: no restrictions.
solubility: soluble in dilute acid solutions
form: nanopowder
color: White
Specific Gravity: 5.01 · 5.01
PH: 10 · 10±1
Viscosity: 3.06 · 3.06 (typical)
Water Solubility: Insoluble
Thermal Conductivity: 14.226 W/ · 14.226 W/(m·K)
Specific Heat Capacity: 0.45 J/ · Cp(crystal): 0.45 J/(g·K), at 25℃
Sensitive: Air Sensitive
Crystal Structure: Trigonal
crystal system: Cube
Merck: 14 · 14,10107
Space group: 3 · Ia3
Lattice constant: a/nm
Symbol(GHS): 2 · GHS02,GHS07
Signal word: Danger
Hazard statements: 225 · H225-H319-H336
Precautionary statements: 210 · P210-P305+P351+P338
PPE: 95 · dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes: Xi,F
Risk Statements: 36 · 36/37/38-67-36/37-36-11
Safety Statements: 26 · 26-36-37/39-16
RIDADR: 1950 · UN1950
WGK Germany: 1 · 1
RTECS: 3850000 · ZG3850000
F: 3 · 3-9
TSCA: TSCA listed
HazardClass: 2.1 · 2.1
HS Code: 28469011 · 28469011
Storage Class: 13 · 13 - Non Combustible Solids
Toxicity: 50 · mouse,LD50,intraperitoneal,430mg/kg (430mg/kg),"Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982Vol. -, Pg. 121, 1982.
REACH Registrations: Active

Safety & regulation

GHS classification

GHS Classification · 6 items

This chemical does not meet GHS hazard criteria for 50% (274 of 548) of reports.

Warning

H315 (43.6%): Causes skin irritation [Warning Skin corrosion/irritation]

P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 548 reports by companies from 15 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

H413 (100%): May cause long lasting harmful effects to aquatic life [Hazardous to the aquatic environment, long-term hazard]

Hazard information

Regulatory Information · 4 items

Chemical: Yttrium oxide (Y2O3)

Yttrium oxide (Y2O3) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Yttrium oxide (Y2O3) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

Status: Active Update: 23-03-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/14370

Yttrium oxide (Y2O3): Does not have an individual approval but may be used under an appropriate group standard

Hazards SummaryBy the intraperitoneal route, it is a poison. [Sax] A skin irritant; [MSDSonline] See Yttrium. See RARE EARTH METALS and linked occupational diseases.

Hazard Classes and Categories · 3 items

Skin Irrit. 2 (43.6%)

Aquatic Chronic 4 (100%)

Serious eye damage/eye irritation - Category 2B

Safety & protection

Threshold Limit Values (TLV)1.0 [mg/m3], as Y

Permissible Exposure Limit (PEL)1.0 [mg/m3], as Y

Protective Action Criteria (PAC) · 6 items

7.6 [mg/m3]

15 [mg/m3]

91 [mg/m3]

2.5 [mg/m3]

15 [mg/m3]

91 [mg/m3]

Toxicology

Adverse EffectsFibrogenic - Inducing tissue injury and fibrosis (scarring).

Safety data

F: 3-9
PPE: dust mask type N95 (US), Eyeshields, Gloves
wgk: 1
tsca: TSCA listed
rtecs: ZG3850000
ridadr: UN1950
hs_code: 28469011
Toxicity: mouse,LD50,intraperitoneal,430mg/kg (430mg/kg),"Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982Vol. -, Pg. 121, 1982.
risk_code: 36/37/38-67-36/37-36-11
Signal word: Danger
Symbol(GHS): GHS02,GHS07
hazard_code: Xi,F
safety_code: 26-36-37/39-16
hazard_class: 2.1
Storage Class: 13 - Non Combustible Solids
Hazard statements: H225-H319-H336
REACH Registrations: Active
Precautionary statements: P210-P305+P351+P338

Chemistry & industry

Uses & manufacturing

UsesUsed in an alloy with europium for color TV phosphors, in yttrium-iron garnets for microwave filters, and in refractories with zirconia and silicon nitride; [Hawley]

U.S. Production2023: 1,000,000 - <2,500,000 lb

Consumer UsesCatalyst

Industry UsesDispersing agent

General Manufacturing Information · 3 items

Other (requires additional information)

Yttrium oxide (Y2O3): ACTIVE

Yttrium oxide: ACTIVE

Applications · 4 items

UsesYttrium Oxide, also called Yttria, high purity Yttrium Oxides are the most important materials for tri-bands Rare Earth phosphors which give the red colour in colour television & computer tubes. In optical industry, the Yttrium Oxide is used to produce Yttrium-Iron-Garnets, which are very effective microwave filters. Low purity of Yttrium Oxide are widely applied in electronic ceramics. It is widely used to make Eu:YVO4 and Eu:Y2O3 phosphors that give the red color in color TV picture tubes. Also, it is used in gas mantles and acetylene lights. Other uses are in yttriumiron garnets for microwave filters in lasers, and as a stabilizer for high temperature in refractories.

UsesYttrium oxide is an excellent mineralizing agent for spinel formation. Yttrium oxide is used as a common starting material for both materials science as well as inorganic compounds. Provides easy application of uniform, thin, protective high temperature Yttrium Oxide coatings. Yttrium Oxide is used to produce Yttrium-Iron-Garnets, which are very effective microwave filters. Low purity of Yttrium Oxide are widely applied in electronic ceramics. Yttrium Oxide is also used to make Yttrium-Iron-Garnets, which are very effective microwave filters.

UsesYttrium oxide was used in the preparation of pervoskite type structure, YAlO3, containing chrome ions.1 The effect of yttrium oxide dopant on the phase formation and sintering characteristics was studied. It may be used in the manufacturing of neodymium Nd:YAG lasers and in components of MOS and LED transistors.

General DescriptionYttrium oxide is an excellent mineralizing agent for spinel formation. It has a high melting point(2450oC), chemical stability, low coefficient of thermal expansion, high transparency for both visible (70%) and infrared (60%) light, low cut off energy of photons.

Preparation methods · 1 item

PreparationYttrium oxide is produced as an intermediate in recovery of yttrium from xenotime and monazite (See Yttrium, Recovery). The oxide is produced after separation of rare earth sulfates obtained from digesting the mineral with sulfuric acid on a cation exchange bed, precipitating yttrium fraction as oxalate, and igniting the oxalate at 750°C. Yttrium oxide also may be obtained by thermal decomposition of yttrium nitrate.