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Antibiotics and anti-infectives

Roxarsone

Also known as 4-Hydroxy-3-nitrobenzenearsonic acid, 3-Nitro, Roxarson

CAS 121-19-7Formula C6H6AsNO6Molar mass 263.04 g/molEC 204-453-7
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Hazardous to the environment 11 suppliers listed
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Roxarsone chemical structure, C6H6AsNO6, CAS 121-19-7
2D chemical structure

Key facts

What buyers check first

All properties
Physical form
Crystals
Melting point
>300
Solubility
Less than 1 mg/mL at 73 °F
HS code
293190
Category
Antibiotics and anti-infectives
UN number
UN 1557
Illustrative photo, 25 kg white woven sacks of powder on a pallet in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Roxarsone?

Plain description, key identifiers and synonyms

Roxarsone is an organoarsonic acid where the organyl group is 4-hydroxy-3-nitrophenyl. It has a role as an agrochemical, a coccidiostat, an antibacterial drug and an animal growth promotant. It is an organoarsonic acid and a member of 2-nitrophenols. It is functionally related to a phenylarsonic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(4-hydroxy-3-nitrophenyl)arsonic acid
CAS number
121-19-7 CAS number cross-checked
EC number
204-453-7
Molecular formula
C6H6AsNO6
UNII
H5GU9YQL7L
MDL number
MFCD00007112
InChIKey
XMVJITFPVVRMHC-UHFFFAOYSA-N
InChI
InChI=1S/C6H6AsNO6/c9-6-2-1-4(7(10,11)12)3-5(6)8(13)14/h1-3,9H,(H2,10,11,12)
SMILES (canonical and isomeric)
C1=CC(=C(C=C1[As](=O)(O)O)[N+](=O)[O-])O

Synonyms

  • 4-Hydroxy-3-nitrobenzenearsonic acid
  • 3-Nitro
  • Roxarson
  • Roxarsonum
  • Nitrophenolarsonic acid
  • (4-hydroxy-3-nitrophenyl)arsonic acid
  • 3-Nitro-4-hydroxybenzenearsonic acid
  • Arsonic acid, (4-hydroxy-3-nitrophenyl)-
  • 2-Nitro-1-hydroxybenzene-4-arsonic acid
  • NIH 1529
  • nitrophenoloarsonic acid
  • roxarsona
  • 3Nitro10
  • 3 Nitro 10
  • 3 Nitro 4 Hydroxyphenylarsonic Acid
  • Acid, 3-Nitro-4-Hydroxyphenylarsonic
  • 4-Hydroxy-3-nitrophenylarsonic acid
  • Ristat
  • Ren-O-sal
  • Aklomix-3
  • 3N4hpa
  • Ren O-sal
  • 3-Nitro-10
  • 3-Nitro-20
  • 3-Nitro-50
Show all 35 synonyms
  • 3-Nitro-80
  • C6H6AsNO6
  • Benzenearsonic acid, 4-hydroxy-3-nitro-
  • Nitro acid 100 per cent
  • 2-Nitrophenol-4-arsonic acid
  • Roxarsone (USP/INN)
  • (4-hydroxy-3-nitro-phenyl)arsonic acid
  • Kyselina 4-hydroxy-3-nitrofenylarsonova
  • 4-Hydroxy-3-nitro-benzenearsonic acid
  • Arsonic acid, As-(4-hydroxy-3-nitrophenyl)-

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

Physical form
Crystalsexp.
Melting point
>300exp.
Solubility
Less than 1 mg/mL at 73 °Fexp.

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
263.04 g/molcalc.
Exact mass
262.9411 Dacalc.
LogP (octanol/water)
-1.14calc.
Topological polar surface area
120.9 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
2calc.
Heavy atoms
14calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS09: Hazardous to the environment
Hazardous to the environment

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 1557

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

Roxarsone suppliers

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

All 11 suppliers
11 of 11 offers

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

11 suppliers in 4 countries

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Roxarsone 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

Use classes: Animal Drugs.

Pharmacological actions

  • Anti-Bacterial Agents
  • Coccidiostats

Roles

  • agrochemical
  • animal growth promotant
  • antibacterial agent
  • antibacterial drug
  • antiinfective agent
  • antimicrobial agent
  • antimicrobial drug
  • antiparasitic agent
  • antiprotozoal drug
  • coccidiostat
  • pharmaceutical

Regulatory status

Inventories, regulations and trade controls that list this substance

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 Roxarsone is traded under.

HS 2931.90Indicative HS code

Organo-inorganic compounds, other than tetramethyl lead, tetraethyl lead, tributyltin compounds…

World exports in 2024
$3.97B
+5.3% vs 2023, imports $3.93B
2019 to 2024
Top exporters
  1. China28.3%
  2. United States15.6%
  3. Germany15.1%
Top importers
  1. United States14.6%
  2. China13.0%
  3. South Korea8.5%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Roxarsone is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Roxarsone?

Roxarsone is an organoarsonic acid where the organyl group is 4-hydroxy-3-nitrophenyl. It has a role as an agrochemical, a coccidiostat, an antibacterial drug and an animal growth promotant. It is an organoarsonic acid and a member of 2-nitrophenols. It is functionally related to a phenylarsonic acid.

What is the CAS number of Roxarsone?

The CAS registry number of Roxarsone is 121-19-7.

What is the molecular formula and weight of Roxarsone?

The molecular formula of Roxarsone is C6H6AsNO6 and its molar mass is 263.04 g/mol.

What is Roxarsone used for?

Use classes: Animal Drugs.

Is Roxarsone hazardous?

Roxarsone carries the GHS signal word "Danger". Main hazards: toxic if swallowed, toxic if inhaled, very toxic to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Roxarsone?

Roxarsone is usually classified under HS code 293190 (X. ORGANO-INORGANIC COMPOUNDS, HETEROCYCLIC COMPOUNDS, NUCLEIC ACIDS AND THEIR SALTS…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Roxarsone?

CompoundList lists 11 suppliers of Roxarsone in United States, China, India and Colombia. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Roxarsone in India?

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

What is the price of Roxarsone?

Suppliers quote Roxarsone 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 Roxarsone

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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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