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Rare earth compounds

Yttrium

Also known as Yttrium-89, Yttrium element, Yttrium metal

CAS 7440-65-5Formula YMolar mass 88.91 g/molEC 231-174-8
GHS signal word: Danger. Pictograms: Flammable, Harmful or irritant 62 suppliers listed Drug substance
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Element with atomic number and standard atomic weight

Key facts

What buyers check first

All properties
Appearance
Iron-gray, lustrous powder, darkens on exposure to light
Melting point
1,522 °C
Boiling point
3,345 °C
Density
4.47 g/cm³
Solubility
Decomposes in water
HS code
280530
Category
Rare earth compounds
UN number
UN 3178
Illustrative photo, metallic grey powder in a steel drum in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Yttrium?

Plain description, key identifiers and synonyms

Yttrium(2+) is a yttrium cation, a monoatomic dication and a divalent metal cation.

Yttrium is a chemical element with symbol Y and atomic number 39.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
yttrium
CAS number
7440-65-5 CAS number cross-checkedOther or deprecated CAS: 13598-57-7
EC number
231-174-8
Molecular formula
Y
UNII
58784XQC3Y
MDL number
MFCD00011468
InChIKey
VWQVUPCCIRVNHF-UHFFFAOYSA-N
InChI
InChI=1S/Y
SMILES (canonical and isomeric)
[Y]

Synonyms

  • Yttrium-89
  • Yttrium element
  • Yttrium metal
  • Yttrium, elemental
  • Yttrium Metallicum
  • Yttrium and compounds
  • yttrium atom
  • Yttrium ion
  • ytrio
  • yttrium(2+)
  • Yttrium foil
  • Yttrium Standard: Y @ 5 wt % in 20% HNO3
  • Yttrium Standard: Y @ 2 wt% in Hydrocarbon Oil
  • Yttrium - Y @ 1000 microg/g in Hydrocarbon Oil
  • Yttrium Standard: Y @ 10 microg/mL in 2% HNO3
  • ICP standard Yttrium 2-5% HNO3 1000 microg/mL
  • Yttrium Standard: Y @ 1000 microg/mL in 5% HNO3
  • Yttrium Standard: Y @ 10000 microg/mL in 5% HNO3
  • Yttrium Internal Standard: Y @ 10 microg/mL in 2% HNO3
  • Yttrium Standard: Y @ 5000 microg/g in Hydrocarbon Oil
  • Yttrium chips
  • Yttrium ingot
  • Yttrium pieces
  • Yttrium powder
  • Atomic Yttrium
Show all 38 synonyms
  • Element Yttrium
  • Element:Yttrium
  • Sulfur-Free Yttrium Standard: Y @ 1000 microg/g in Hydrocarbon Oil
  • Sulfur-Free Yttrium Standard: Y @ 5000 microg/g in Hydrocarbon Oil
  • Element-Y
  • Element:Y
  • Yttrium (atomic)
  • Yttrium (element)
  • 89Y isotope
  • Y (element)
  • yttrium(2+) ion
  • Isotope:89Y
  • Y Standard Solution

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Iron-gray, lustrous powder, darkens on exposure to lightexp.
Odour
Odorlessexp.
Melting point
1,522 °Cexp.
Boiling point
3,345 °Cexp.
Density
4.47 g/cm³exp.
Solubility
Decomposes in waterexp.
Vapour pressure
6.66 × 10⁻¹¹ Pa at 1000 K, 2.96 × 10⁻⁷ Pa at 1200 K, 1.17 × 10⁻⁴ Pa at 1400 K, 1.02 × 10⁻² Pa at 1600 K, 0.316 Pa at 1800 K, 4.27 Pa at 2000 K, 35.9 Pa at 2200 Kexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
88.91 g/molcalc.
Exact mass
88.9058 Dacalc.
LogP (octanol/water)
0calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
1calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H228Flammable solid.
  • H250Catches fire spontaneously if exposed to air.
  • H302Harmful if swallowed.
  • H312Harmful in contact with skin.
  • H332Harmful if inhaled.
  • H413May cause long lasting harmful effects to aquatic life.
Precautionary statements (22)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P222Do not allow contact with air.
  • P231Handle and store contents under inert gas.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P335 + P334If on skin: Brush off loose particles from skin. Immerse in cool water or wrap in wet bandages.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 3178

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Yttrium suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 62 suppliers
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Where suppliers are based

62 suppliers in 13 countries

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Yttrium price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Yttrium is used ... in iron and other alloys, in incandescent gas mantles, as a deoxidizer for metals, in coatings of high temperature metals, in television screen phosphors, and in yttrium-aluminum-garnet (YAG) lasers.

Pharmacology

Yttrium is an element with atomic symbol Y, atomic number 39, and atomic weight 88.91.

How it is made

Reduction of the fluoride with calcium.

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • Active ingredient in FDA approved drug labels

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Yttrium is traded under.

HS 2805.30Exact HS code

Rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed

World exports in 2024
$385M
+7.4% vs 2023, imports $503M
2019 to 2024
Top exporters
  1. Vietnam * partner reported50.6%
  2. China24.9%
  3. Thailand17.1%
Top importers
  1. Japan49.0%
  2. Malaysia25.5%
  3. Vietnam * partner reported8.2%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Yttrium is indicative (it was matched by name in the HS nomenclature). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Yttrium, based on the data on this page

What is Yttrium?

Yttrium(2+) is a yttrium cation, a monoatomic dication and a divalent metal cation.

What is the CAS number of Yttrium?

The CAS registry number of Yttrium is 7440-65-5. Other or deprecated CAS numbers: 13598-57-7.

What is the molecular formula and weight of Yttrium?

The molecular formula of Yttrium is Y and its molar mass is 88.91 g/mol.

What is Yttrium used for?

Yttrium is used ... in iron and other alloys, in incandescent gas mantles, as a deoxidizer for metals, in coatings of high temperature metals, in television screen phosphors, and in yttrium-aluminum-garnet (YAG) lasers.

Is Yttrium hazardous?

Yttrium carries the GHS signal word "Danger". Main hazards: flammable solid, catches fire spontaneously if exposed to air, harmful if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Yttrium?

Yttrium is usually classified under HS code 280530 (Rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Yttrium?

CompoundList lists 62 suppliers of Yttrium in United States, China, Germany, Spain and 9 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Yttrium in India?

1 supplier in India list Yttrium on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Yttrium?

Suppliers quote Yttrium on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Yttrium

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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