Arsenic
Also known as Arsen, Arsenic-75, Gray arsenic
Key facts
What buyers check first
- Appearance
- It exists in three allotropic forms, the yellow (alpha), black (beta) and grey (gamma) f…
- Melting point
- 612.8 °C
- Boiling point
- 612.8 °C
- Density
- 5.7 g/cm³
- Solubility
- Insoluble in water
- HS code
- 280480
- Category
- Metals, alloys and elements
- UN number
- UN 1558
What is Arsenic?
Plain description, key identifiers and synonyms
Arsenic atom is a metalloid atom and a pnictogen. It has a role as a micronutrient.
Arsenic is a chemical element with symbol As and atomic number 33.
Identifiers
Registry numbers, names and line notations, tap to copy
- IUPAC name
- arsenic
- CAS number
- 7440-38-2 CAS number cross-checkedOther or deprecated CAS: 14644-45-2, 7784-42-1
- EC numbers
- 231-148-6, 232-066-3
- Molecular formula
- As
- UNII
- N712M78A8G, V1I29R0RJQ
- InChIKey
- RQNWIZPPADIBDY-UHFFFAOYSA-N
- InChI
- InChI=1S/As
- SMILES (canonical and isomeric)
- [As]
Synonyms
- Arsen
- Arsenic-75
- Gray arsenic
- Colloidal arsenic
- Arsenic, elemental
- Scherbenkobalt
- Dietary Arsenic
- Arsenic 75
- Elemental arsenic
- Arsenicum metallicum
- Arsenic Black
- Arsenic ion
- arsenic(III) cation
- As
- Grey arsenic
- Metallic arsenic
- Arsenicals
- Arsenic metal
- arsenic atom
- Arsenic solution
- 7440-38-2(solution)
- Aluminium alloy, O62mm x 30mm
- Arsenicals, Arsenic, inorganic, Arsen
- Arsenic Standard: As @ 10 microg/mL in 2% HNO3
- Arsenic Standard: As @ 1000 microg/mL in 5% HNO3
Show all 38 synonymsShow fewer synonyms
- Arsenic Standard: As @ 10000 microg/mL in 5% HNO3
- arsenico
- arsenicum
- Arsenic AA Standard: As @ 1000 microg/mL in 5% HNO3
- Arsinidene
- Arsenic Standard: 1000 microg/g As in 75 cSt Hydrocarbon Oil
- Arsenic element
- Atomic Arsenic
- Element Arsenic
- Element:Arsenic
- Element-As
- Element:As
- Arsenic, lump
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 | It exists in three allotropic forms, the yellow (alpha), black (beta) and grey (gamma) formsexp.Measured value |
|---|---|
| Odour | Odorlessexp.Measured value |
| Taste | NEARLY TASTELESSexp.Measured value |
| Melting point | 612.8 °Cexp.Measured value |
| Boiling point | 612.8 °Cexp.Measured value |
| Density | 5.7 g/cm³exp.Measured value |
| Autoignition temperature | 180 °Cexp.Measured value |
| Solubility | Insoluble in waterexp.Measured value |
| Vapour pressure | 7.5 × 10⁻³ mm Hg @ 280 °C, 7.5 × 10⁻² @ 323 °C, 0.75 mm Hg @ 373 °C, 7.5 mm Hg @ 433 °C, 75 mm Hg @ 508 °C, 750 mm Hg @ 601 °Cexp.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 | 74.92 g/molcalc.Computed value |
|---|---|
| Exact mass | 74.9216 Dacalc.Computed value |
| LogP (octanol/water) | -0.38calc.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
Hazard statements
- H301Toxic if swallowed.
- H331Toxic if inhaled.
- H400Very toxic to aquatic life.
- H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (14)
- 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.
- P301 + P316If swallowed: Get emergency medical help immediately.
- P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
- P316Get emergency medical help immediately.
- P321Specific treatment (see supplemental first aid instructions on the label).
- P330Rinse mouth.
- P391Collect spillage.
- P403 + P233Store in a well-ventilated place. Keep container tightly closed.
- P405Store locked up.
- P501Dispose of contents and container in accordance with local regulations.
- UN number
- UN 1558
- Transport hazard class
- 6.1
- Packing group
- II
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 aidArsenic suppliers
Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings
- China, ChenzhouUnclaimed profileArsenicGrade, purity and minimum order on requestPrice on request
- Price on request
- India, Bhiwani ManufacturerUnclaimed profileArsenicGrade, purity and minimum order on requestPrice on request
- India, Barmer ManufacturerUnclaimed profileArsenicGrade, purity and minimum order on requestPrice on request
- India, Barabanki ManufacturerUnclaimed profileArsenicGrade, purity and minimum order on requestPrice on request
- India, Mysuru ManufacturerUnclaimed profileArsenicGrade, purity and minimum order on requestPrice on request
- China, XiamenUnclaimed profileArsenicGrade, purity and minimum order on requestPrice on request
- China, Shaoxing ManufacturerUnclaimed profileArsenicGrade, purity and minimum order on requestPrice on request
- China, Lianyungang ManufacturerUnclaimed profileArsenicGrade, purity and minimum order on requestPrice on request
- China, Zhoukou ManufacturerUnclaimed profileArsenicGrade, purity and minimum order on requestPrice 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
79 suppliers in 12 countries
- China30
- United States21
- India8
- Germany4
- Spain3
- United Kingdom3
- and 6 more countries
Send one request to many suppliers
Choose up to 10 suppliers or let us match your request. Compare quotes side by side, free.
Arsenic 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
Alloying constituent.
Component of alloys, component of electrical devices.
In metallurgy for hardening copper, lead, nonferrous alloys, automotive body solder, in semiconductor materials, in the manufacture of low-melting glass.
Wood preservative.
Inorganic arsenic is primarily used as a preservative to make wood resistant to rot and decay, although the use for certain residential items, such as decks and picnic tables, has been phased out.
Read more
Inorganic arsenic is still used for this purpose in industrial applications.
Arsenic and its compounds have been used as alloy additives, in electronic devices, such as smartphones, in veterinary medicines, in pigment production, in glass manufacturing, as bronzing or decolorizing agents, in textile printing, in tanning, and other uses.
Until the 1940s, inorganic arsenic was used as a therapeutic agent in the treatment of various diseases, such as leukemia, psoriasis, and chronic bronchial asthma. Inorganic arsenic may still be used in homeopathic or folk remedies in the United States and other countries, and its use has reemerged in an FDA-approved treatment for.
Industrial uses: Other, Alloys, Fuel agents, Flux agent, Hardener, Intermediate.
Consumer uses: Other, Flux agent, Hardener.
Use classes: Inorganic substances.
Industries and functions
Roles
- food component
- micronutrient
- nutrient
- physiological role
Pharmacology
Arsenic is a naturally occurring allotropic pnictogen and metalloid trace element with atomic symbol As, atomic number 33, and atomic weight 74.92 that is found in water, air, food, and soil, and has a role as a micronutrient. Arsenic, which is highly toxic with acute or chronic exposure to moderate or high levels through an unknown mechanism of action, is used in many industrial processes, as well as in pharmaceuticals, feed additives, and pesticides. It is characterized as a white, yellow, gray metallic, or black solid that is odorless. Exposure occurs by inhalation, ingestion, or contact.
How it is made
Arsenic "metal" is produced either by roasting the sulfide to form the oxide and then reducing the oxide with carbon or by heating arsenopyrite in the absence of air. When arsenic containing ores are smelted the arsenic becomes gaseous and burns in air to arsenic trioxide. This is trapped by electrostatic precipitators as a crude dust, which is roasted so as to drive off arsenic trioxide. The purified arsenic trioxide is collected in a cooling chamber.
Flue dust of copper and lead smelters, from which it is obtained as white arsenic (arsenic trioxide) in varying degrees of purity.
Read more
This is reduced with charcoal. Commercial grade is not made in the US.
Metallic arsenic can be obtained by the direct smelting of the minerals arsenopyrite or loellingite. The arsenic vapor is sublimed when these minerals are heated to about 650-700 °C in the absence of air. The metal can also be prepared commercially by the reduction of arsenic trioxide with charcoal. The oxide and charcoal are mixed and placed into a horizontal steel retort jacketed with firebrick which is then gas-fired. The reduced arsenic vapor is collected in a water-cooled condenser. In a process by Boliden Aktuebolag, the steel retort, heated to 700-800 °C in an electric furnace, is equipped with a demountable air-cooled condenser.
Regulatory status
Inventories, regulations and trade controls that list this substance
Europe
- EU harmonised classification (CLP Annex VI)Index no: 033-001-00-X
Health and food
- EU Cosmetics Regulation Annex II, prohibited in cosmeticsName: Arsenic and its compounds, Ref no: 43, Annex ref: II/43
- 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 Arsenic is traded under.
Arsenic
The HS code shown for Arsenic is indicative (it was matched by name in the HS nomenclature). Confirm the classification with your customs broker before shipping.
Related chemicals
Parent and salt forms, stereoisomers, similar structures and isomers
Stereoisomers and isotopic forms
Same connectivity, different stereochemistry or isotopes (same InChIKey skeleton)
Similar structures
Nearest neighbours by Morgan fingerprint Tanimoto similarity
Frequently asked questions
Quick answers about Arsenic, based on the data on this page
What is Arsenic?
What is the CAS number of Arsenic?
What is the molecular formula and weight of Arsenic?
What is Arsenic used for?
Is Arsenic hazardous?
What is the HS code of Arsenic?
Where can I buy Arsenic?
Where can I buy Arsenic in India?
What is the price of Arsenic?
Guides for buyers
Practical guides that help when you source, ship or handle Arsenic
- Guide, SafetyHow to read a safety data sheet in 10 minutesA section by section method to pull the essentials out of any 16 section SDS: identity, hazards, composition, storage, PPE, properties, transport and emergency measures.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, SafetyGHS pictograms, signal words and hazard statements explainedA practical guide to the nine GHS pictograms, the signal words Danger and Warning, H and P statements, and how to read a chemical label in seconds.Read
Get quotes for Arsenic
Embed this structure on your websiteShow code
Paste this code into your page to show the 2D structure of Arsenic with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.
<iframe src="https://www.compoundlist.com/embed/structure/arsenic-7440-38-2" title="Arsenic structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>Explore more in Metals, alloys and elements or HS code 280480