CAS #:

Linear Formula:

Er2(SO4)3 • 8H2O

MDL Number:


EC No.:



(2N) 99% Erbium(III) Sulfate Octahydrate
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(3N) 99.9% Erbium(III) Sulfate Octahydrate
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(4N) 99.99% Erbium(III) Sulfate Octahydrate
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(5N) 99.999% Erbium(III) Sulfate Octahydrate
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Erbium(III) Sulfate Octahydrate Properties (Theoretical)

Compound Formula Er2H16O20S3
Molecular Weight 766.83
Appearance Pink crystalline solid
Melting Point Decomposes
Boiling Point N/A
Density 3.205-3.22 g/cm3
Solubility in H2O 21 g/kg
Exact Mass 765.802369 g/mol
Monoisotopic Mass 765.802369 g/mol

Erbium(III) Sulfate Octahydrate Health & Safety Information

Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
Risk Codes N/A
Safety Statements N/A
Transport Information NONH for all modes of transport

View and Print SDS


Date Accessed: 01/29/2023
Date Revised:01/15/2022


Product Name: Erbium(III) Sulfate Octahydrate

Product Number: All applicable American Elements product codes, e.g. ER-SAT-02-C.8HYD , ER-SAT-03-C.8HYD , ER-SAT-04-C.8HYD , ER-SAT-05-C.8HYD

CAS #: 10031-52-4

Relevant identified uses of the substance: Scientific research and development

Supplier details:
American Elements
10884 Weyburn Ave.
Los Angeles, CA 90024
Tel: +1 310-208-0551
Fax: +1 310-208-0351

Emergency telephone number:
Domestic, North America: +1 800-424-9300
International: +1 703-527-3887


Physical hazards Not classified.
Health hazards Not classified.
Environmental hazards Not classified.
OSHA defined hazards Not classified.
Label elements
Hazard symbol None.
Signal word None.
Hazard statement The substance does not meet the criteria for classification.
Precautionary statement
Prevention Observe good industrial hygiene practices.
Response Wash hands after handling.
Storage Store away from incompatible materials.
Disposal Dispose of waste and residues in accordance with local authority requirements.
Hazard(s) not otherwise
classified (HNOC)
None known.
Supplemental information None.


Chemical name Common name and synonyms CAS number %
ERBIUM SULFATE Erbium sulfate, octahydrate 10031-52-4 100
*Designates that a specific chemical identity and/or percentage of composition has been withheld as a trade secret.


Inhalation Move to fresh air. Call a physician if symptoms develop or persist.
Skin contact Wash off with soap and water. Get medical attention if irritation develops and persists.
Eye contact Rinse with water. Get medical attention if irritation develops and persists.
Ingestion Rinse mouth. Get medical attention if symptoms occur.
Most important
symptoms/effects, acute and
Direct contact with eyes may cause temporary irritation.
Indication of immediate
medical attention and special
treatment needed
Treat symptomatically.
General information Ensure that medical personnel are aware of the material(s) involved, and take precautions to
protect themselves.


Suitable extinguishing media Use extinguishing agent suitable for type of surrounding fire. Water fog. Foam. Dry chemical
powder. Carbon dioxide (CO2).
Unsuitable extinguishing
None known.
Specific hazards arising from
the chemical
During fire, gases hazardous to health may be formed.
Special protective equipment
and precautions for
Self-contained breathing apparatus and full protective clothing must be worn in case of fire.
Fire fighting
Use water spray to cool unopened containers.
Specific methods Use standard firefighting procedures and consider the hazards of other involved materials.
General fire hazards No unusual fire or explosion hazards noted.


Personal precautions,
protective equipment and
emergency procedures
Keep unnecessary personnel away. For personal protection, see section 8 of the SDS.
Methods and materials for
containment and cleaning up
This product is miscible in water. Stop the flow of material, if this is without risk. Following product
recovery, flush area with water. For waste disposal, see section 13 of the SDS.
Environmental precautions Avoid discharge into drains, water courses or onto the ground.


Precautions for safe handling Observe good industrial hygiene practices.
Conditions for safe storage,
including any
Store in original tightly closed container. Store away from incompatible materials (see Section 10 of
the SDS).


Occupational exposure limits No exposure limits noted for ingredient(s).
Biological limit values No biological exposure limits noted for the ingredient(s).
Appropriate engineering
Good general ventilation (typically 10 air changes per hour) should be used. Ventilation rates should
be matched to conditions. If applicable, use process enclosures, local exhaust ventilation, or other
engineering controls to maintain airborne levels below recommended exposure limits. If exposure
limits have not been established, maintain airborne levels to an acceptable level.
Individual protection measures, such as personal protective equipment
Eye/face protection Wear safety glasses with side shields (or goggles).
Skin protection
Hand protection Wear appropriate chemical resistant gloves.
Other Wear suitable protective clothing.
Respiratory protection In case of insufficient ventilation, wear suitable respiratory equipment.
Thermal hazards Wear appropriate thermal protective clothing, when necessary.
General hygiene
Always observe good personal hygiene measures, such as washing after handling the material and
before eating, drinking, and/or smoking. Routinely wash work clothing and protective equipment to
remove contaminants.


Physical state Solid.
Form Crystalline. Solid.
Color Pink.
Odor Odorless.
Odor threshold Not available.
pH Not available.
Melting point/freezing point Not available.
Initial boiling point and
boiling range
Not available.
Flash point Not available.
Evaporation rate Not available.
Flammability (solid, gas) Not available.
Upper/lower flammability or explosive limits
Flammability limit - lower
Not available.
Flammability limit -
upper (%)
Not available.
Explosive limit - lower
Not available.
Explosive limit - upper
Not available.
Vapor pressure Not available.
Vapor density Not available.
Relative density Not available.
Solubility (water) 21 g/kg (per kg water)
Partition coefficient
Not available.
Auto-ignition temperature Not available.
Decomposition temperature Not available.
Viscosity Not available.
Other information
Density 3.22 g/cm3
Molecular formula Er2(SO4)3.8H2O
Molecular weight 766.85
Specific gravity 3.22


Reactivity The product is stable and non-reactive under normal conditions of use, storage and transport.
Chemical stability Material is stable under normal conditions.
Possibility of hazardous
No dangerous reaction known under conditions of normal use.
Conditions to avoid The substance is hygroscopic and will absorb water by contact with the moisture in the air.
Incompatible materials None known.
Hazardous decomposition
No hazardous decomposition products are known.


Information on likely routes of exposure
Inhalation No adverse effects due to inhalation are expected.
Skin contact No adverse effects due to skin contact are expected.
Eye contact Direct contact with eyes may cause temporary irritation.
Ingestion Expected to be a low ingestion hazard.
Symptoms related to the
physical, chemical and
toxicological characteristics
Direct contact with eyes may cause temporary irritation.
Information on toxicological effects
Acute toxicity Not available.
Skin corrosion/irritation Prolonged skin contact may cause temporary irritation.
Serious eye damage/eye
Direct contact with eyes may cause temporary irritation.
Respiratory or skin sensitization
Respiratory sensitization Not available.
Skin sensitization This product is not expected to cause skin sensitization.
Germ cell mutagenicity No data available to indicate product or any components present at greater than 0.1% are
mutagenic or genotoxic.
Carcinogenicity This product is not considered to be a carcinogen by IARC, ACGIH, NTP, or OSHA.
Reproductive toxicity This product is not expected to cause reproductive or developmental effects.
Specific target organ toxicity
- single exposure
Not classified.
Specific target organ toxicity
- repeated exposure
Not classified.
Aspiration hazard Not available.


Ecotoxicity The product is not classified as environmentally hazardous. However, this does not exclude the
possibility that large or frequent spills can have a harmful or damaging effect on the environment.
Persistence and degradability No data is available on the degradability of this product.
Bioaccumulative potential No data available.
Mobility in soil No data available.
Other adverse effects No other adverse environmental effects (e.g. ozone depletion, photochemical ozone creation
potential, endocrine disruption, global warming potential) are expected from this component.


Disposal instructions Collect and reclaim or dispose in sealed containers at licensed waste disposal site.
Local disposal regulations Dispose in accordance with all applicable regulations.
Hazardous waste code The waste code should be assigned in discussion between the user, the producer and the waste
disposal company.
Waste from residues /
unused products
Dispose of in accordance with local regulations. Empty containers or liners may retain some product
residues. This material and its container must be disposed of in a safe manner (see: Disposal
Contaminated packaging Empty containers should be taken to an approved waste handling site for recycling or disposal.
Since emptied containers may retain product residue, follow label warnings even after container is


Not regulated as dangerous goods.
Not regulated as dangerous goods.
Not regulated as dangerous goods.
Transport in bulk according to N/A
Annex II of MARPOL 73/78
and the IBC Code


US federal regulations All components are on the U.S. EPA TSCA Inventory List.
This product is not known to be a "Hazardous Chemical" as defined by the OSHA Hazard
Communication Standard, 29 CFR 1910.1200.
TSCA Section 12(b) Export Notification (40 CFR 707, Subpt. D)
Not regulated.
CERCLA Hazardous Substance List (40 CFR 302.4)
Not listed.
SARA 304 Emergency release notification
Not regulated.
Superfund Amendments and Reauthorization Act of 1986 (SARA)
Hazard categories Immediate Hazard - No
Delayed Hazard - No
Fire Hazard - No
Pressure Hazard - No
Reactivity Hazard - No
SARA 302 Extremely hazardous substance
Not listed.
SARA 311/312
Hazardous chemical
SARA 313 (TRI reporting)
Not regulated.
Other federal regulations
Clean Air Act (CAA) Section 112 Hazardous Air Pollutants (HAPs) List
Not regulated.
Clean Air Act (CAA) Section 112(r) Accidental Release Prevention (40 CFR 68.130)
Not regulated.
Safe Drinking Water Act
Not regulated.
US state regulations
US. California Controlled Substances. CA Department of Justice (California Health and Safety Code Section 11100)
Not listed.
US. Massachusetts RTK - Substance List
Not regulated.
US. New Jersey Worker and Community Right-to-Know Act
Not listed.
US. Pennsylvania Worker and Community Right-to-Know Law
Not listed.
US. Rhode Island RTK
Not regulated.
US. California Proposition 65
California Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65): This material is not known to contain any
chemicals currently listed as carcinogens or reproductive toxins.
International Inventories
Country(s) or region Inventory name On inventory (yes/no)*
Australia Australian Inventory of Chemical Substances (AICS) No
Canada Domestic Substances List (DSL) No
Canada Non-Domestic Substances List (NDSL) Yes
China Inventory of Existing Chemical Substances in China (IECSC) No
Europe European Inventory of Existing Commercial Chemical Substances Yes
Europe European List of Notified Chemical Substances (ELINCS) No
Japan Inventory of Existing and New Chemical Substances (ENCS) Yes
Korea Existing Chemicals List (ECL) Yes
New Zealand New Zealand Inventory No
Philippines Philippine Inventory of Chemicals and Chemical Substances No
United States & Puerto Rico Toxic Substances Control Act (TSCA) Inventory Yes
*A "Yes" indicates that all components of this product comply with the inventory requirements administered by the governing country(s)
A "No" indicates that one or more components of the product are not listed or exempt from listing on the inventory administered by the governing


Safety Data Sheet according to Regulation (EC) No. 1907/2006 (REACH). The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. American Elements shall not be held liable for any damage resulting from handling or from contact with the above product. See reverse side of invoice or packing slip for additional terms and conditions of sale. COPYRIGHT 1997-2022 AMERICAN ELEMENTS. LICENSED GRANTED TO MAKE UNLIMITED PAPER COPIES FOR INTERNAL USE ONLY.

About Erbium(III) Sulfate Octahydrate

Sulfate IonErbium(III) Sulfate Octahydrate is a moderately water and acid soluble Erbium source for uses compatible with sulfates. Sulfate compounds are salts or esters of sulfuric acid formed by replacing one or both of the hydrogens with a metal. Most metal sulfate compounds are readily soluble in water for uses such as water treatment, unlike fluorides and oxides which tend to be insoluble. Organometallic forms are soluble in organic solutions and sometimes in both aqueous and organic solutions. Metallic ions can also be dispersed utilizing suspended or coated nanoparticles and deposited utilizing sputtering targets and evaporation materials for uses such as solar cells and fuel cells. Erbium(III) Sulfate Octahydrate is generally immediately available in most volumes. Ultra high purity and high purity compositions improve both optical quality and usefulness as scientific standards. Nanoscale elemental powders and suspensions, as alternative high surface area forms, may be considered. Erbium has applications in glass coloring, as an amplifier in fiber optics, and in lasers for medical and dental use. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Erbium(III) Sulfate Octahydrate Synonyms

Erbium sulfate octahydrate, dierbium trisulfate octahydrate, erbium trisulfate octahydrate

Chemical Identifiers

Linear Formula Er2(SO4)3 • 8H2O
MDL Number MFCD00149696
EC No. 236-779-0
Beilstein/Reaxys No. N/A
Pubchem CID 25021617
IUPAC Name erbium(+3); trisulfate; octahydrate
SMILES O.O.O.O.O.O.O.O.[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[Er+3].[Er+3]
InchI Identifier InChI=1S/2Er.3H2O4S.H2O/c;;3*1-5(2,3)4;/h;;3*(H2,1,2,3,4);1H2/q2*+3;;;;/p-6

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements


See more Erbium products. Erbium (atomic symbol: Er, atomic number: 68) is a Block F, Group 3, Period 6 element with an atomic radius of 167.259. Erbium Bohr ModelThe number of electrons in each of Erbium's shells is [2, 8, 18, 30, 8, 2] and its electron configuration is [Xe]4f12 6s2. The erbium atom has a radius of 176 pm and a Van der Waals radius of 235 pm. Erbium was discovered by Carl Mosander in 1843. Sources of Erbium include the mineral monazite and sand ores. Erbium is a member of the lanthanide or rare earth series of elements.Elemental Erbium Picture In its elemental form, erbium is soft and malleable. It is fairly stable in air and does not oxidize as rapidly as some of the other rare earth metals. Erbium's ions fluoresce in a bright pink color, making them highly useful for imaging and optical applications. It is named after the Swedish town Ytterby where it was first discovered.


See more Sulfur products. Sulfur (or Sulphur) (atomic symbol: S, atomic number: 16) is a Block P, Group 16, Period 3 element with an atomic radius of 32.066. Sulfur Bohr ModelThe number of electrons in each of Sulfur's shells is 2, 8, 6 and its electron configuration is [Ne] 3s2 3p4. In its elemental form, sulfur has a light yellow appearance. The sulfur atom has a covalent radius of 105 pm and a Van der Waals radius of 180 pm. In nature, sulfur can be found in hot springs, meteorites, volcanoes, and as galena, gypsum, and epsom salts. Sulfur has been known since ancient times but was not accepted as an element until 1777, when Antoine Lavoisier helped to convince the scientific community that it was an element and not a compound.


January 29, 2023
Los Angeles, CA
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