Americium
Also known as Americium(III), americio, Amerizium
Key facts
What buyers check first
- Appearance
- Silvery metal /Zero valence americium/
- Melting point
- 1,173 °C
- Boiling point
- 2,067 °C
- Density
- 13.671/Americium metal/
- Solubility
- Dissolves readily in aq HCl, insoluble in liquid ammonia. /Americium metal/
- HS code
- 284443
- Category
- Metals, alloys and elements
What is Americium?
Plain description, key identifiers and synonyms
Americium atom is an actinoid atom and a f-block element atom.
Americium is a chemical element with symbol Am and atomic number 95.
Identifiers
Registry numbers, names and line notations, tap to copy
- IUPAC name
- americium
- CAS number
- 7440-35-9 CAS number cross-checked
- EC number
- 231-144-4
- Molecular formula
- Am
- UNII
- VW92PHU2UY
- InChIKey
- LXQXZNRPTYVCNG-UHFFFAOYSA-N
- InChI
- InChI=1S/Am
- SMILES (canonical and isomeric)
- [Am]
Synonyms
- Americium(III)
- americio
- Amerizium
- 95Am
- 243Am
- Am
- americium atom
- Americium Ion
- Americium, ion(3+)
- Atomic Americium
- Element-Am
- Element:Am
- Americium element
- Element Americium
- Element:Americium
- Am (element)
- americium(3+)
- Americium (atomic)
- Americium (element)
- Americium, radioactive
- Americium, elemental
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 | Silvery metal /Zero valence americium/exp.Measured value |
|---|---|
| Melting point | 1,173 °Cexp.Measured value |
| Boiling point | 2,067 °Cexp.Measured value |
| Density | 13.671/Americium metal/exp.Measured value |
| Solubility | Dissolves readily in aq HCl, insoluble in liquid ammonia. /Americium metal/exp.Measured value |
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 | 243.00 g/molcalc.Computed value |
|---|---|
| Exact mass | 241.0568 Dacalc.Computed value |
| LogP (octanol/water) | 0calc.Computed value |
| Topological polar surface area | 0 Ųcalc.Computed value |
| Hydrogen bond donors | 0calc.Computed value |
| Hydrogen bond acceptors | 0calc.Computed value |
| Rotatable bonds | 0calc.Computed value |
| Heavy atoms | 1calc.Computed value |
| Rings | 0calc.Computed value |
| Aromatic rings | 0calc.Computed value |
| Fraction sp3 carbons | 0calc.Computed value |
| Formal charge | 0calc.Computed value |
| Stereocentres | 0calc.Computed value |
Calculated for screening. Confirm critical figures with the supplier.
Safety and hazards
GHS classification summary, not a safety data sheet
No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.
GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.
Americium suppliers
Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings
- JapanUnclaimed profileAmericiumGrade, purity and minimum order on requestPrice on request
- Price on request
- China, Shanghai ManufacturerUnclaimed profileAmericiumGrade, purity and minimum order on requestPrice on request
- Price on request
Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.
Where suppliers are based
5 suppliers in 4 countries
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Americium price
Indicative price range per kg from live supplier offers
Suppliers quote this chemical on request. Send one free request and compare quotes side by side.
Uses and applications
What the substance is used for, by industry and function
Soft gamma emission from americium-241 is used to measure the thickness of metal sheets and metal coatings, the degree of soil compaction, sediment concentration in streams, and to induce X-ray fluorescence in chemical analysis. As an alpha emitter, it is mixed with beryllium to produce a neutron source for oil-well logging and to measure water content in soils and industrial process streams. The alpha source is also used to eliminate static electricity and as an ionization source in smoke detectors. (Americium-241).
As target material for production of transcurium elements in high neutron-flux reactors. (Americium-243).
The actinide inventory of radioactive sources consists primarily of radionuclides such as plutonium and americium used in 238Pu-Be and 241Am-Be neutron sealed sources, americium-241gamma sources and plutonium-238Pu heat sources. ...
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Americium oxides are normally used in sources as americium metal is not stable. For neutron sources, fine americium oxide powder is mixed with beryllium powder. Most neutron sources contain Am-Be in powder or pellet form, but some contain the Am-Be in sintered form. (Am-Be).
Large neutron and gamma sources are used in mining, as well as in oil and gas well logging. These neutron sources contain either 238Pu-Be or 241Am-Be. Californium-252 and a few 226Ra-Be neutron sources are also in use. The activity of some americium-241 neutron sources used in well logging can be as high as several hundreds of GBq per source but are usually within the range of 1 to 800 Gbq (Am-Be).
Pharmacology
Americium is a man-made radioactive element with atomic symbol Am, atomic number 95, and atomic weight 243.
How it is made
Americium can be produced through alpha bombardment of plutonium isotopes and their subsequent beta decay.
The metal is obtained by reduction of the trifluoride with barium in a vacuum at 1200 °C. (Zero valence americium)
Alloys of americium with platinum, palladium, and iridium have been prepared by hydrogen reduction of americium oxide in the presence of the finely divided metals. (Americium alloys)
Regulatory status
Inventories, regulations and trade controls that list this substance
United States
- TSCA inventory (USA)Status: Inactive 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 Americium is traded under.
Radioactive elements and isotopes and compounds other than those of subheading 284410…
- Canada32.1%
- Netherlands17.0%
- Germany11.4%
- United States37.8%
- Germany8.4%
- China5.8%
The HS code shown for Americium is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.
Frequently asked questions
Quick answers about Americium, based on the data on this page
What is Americium?
What is the CAS number of Americium?
What is the molecular formula and weight of Americium?
What is Americium used for?
Is Americium hazardous?
What is the HS code of Americium?
Where can I buy Americium?
What is the price of Americium?
Guides for buyers
Practical guides that help when you source, ship or handle Americium
- Article, SourcingHow to write an RFQ that gets fast and accurate quotesWhat suppliers need to quote quickly and comparably: exact product identity, quantity and packing, delivery terms, documents, samples and payment, with a ready to use template.Read
- Guide, Trade and logisticsShipping dangerous goods: UN numbers, classes and packing groupsHow the UN dangerous goods system works for chemicals, from the nine classes and UN numbers to packing groups, UN packaging marks, labels, documents and segregation.Read
- Guide, Trade and logisticsHS codes for chemicals and why they matterHow the Harmonized System classifies chemicals, the chapters that matter, the rules for chemically defined compounds and mixtures, and practical steps to find the right code.Read
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