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Herbicides

Oryzalin

Also known as Surflan, 4-(Dipropylamino)-3,5-dinitrobenzenesulfonamide, Dirimal

CAS 19044-88-3Formula C12H18N4O6SMolar mass 346.37 g/molEC 242-777-0
GHS signal word: Warning. Pictograms: Harmful or irritant, Hazardous to the environment 16 suppliers listed
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Oryzalin chemical structure, C12H18N4O6S, CAS 19044-88-3
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Yellow-orange crystals
Melting point
137 to 138
Boiling point
265 °C
Solubility
In water, 2.5 mg/l @ 25 °C
HS code
293590
Category
Herbicides
UN number
UN 3077
Illustrative photo, yellow pigment powder in an open fibre drum in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Oryzalin?

Plain description, key identifiers and synonyms

Oryzalin is a sulfonamide that is benzenesulfonamide substituted at positions 3 and 5 by nitro groups and at position 4 by a dipropylamino group. It has a role as a herbicide, an agrochemical and an antimitotic. It is an aromatic amine, a sulfonamide, a C-nitro compound and a tertiary amino compound.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4-(dipropylamino)-3,5-dinitrobenzenesulfonamide
CAS number
19044-88-3 CAS number cross-checked
EC number
242-777-0
Molecular formula
C12H18N4O6S
UNII
662E385DWH
MDL number
MFCD00078725
InChIKey
UNAHYJYOSSSJHH-UHFFFAOYSA-N
InChI
InChI=1S/C12H18N4O6S/c1-3-5-14(6-4-2)12-10(15(17)18)7-9(23(13,21)22)8-11(12)16(19)20/h7-8H,3-6H2,1-2H3,(H2,13,21,22)
SMILES (canonical and isomeric)
CCCN(CCC)C1=C(C=C(C=C1[N+](=O)[O-])S(=O)(=O)N)[N+](=O)[O-]

Synonyms

  • Surflan
  • 4-(Dipropylamino)-3,5-dinitrobenzenesulfonamide
  • Dirimal
  • Dirimal Extra
  • 3,5-Dinitro-N4,N4-dipropylsulfanilamide
  • Compound 67019
  • EL 119
  • Dinitrodipropylsulfanilamide
  • 3,5-Dinitro-N4,N4-dipropylsulphanilamide
  • 3,5-Dinitro-N(sup 4),N(sup 4)-dipropylsulfanilamide
  • 4-(dipropylamino)-3,5-dinitrobenzene-1-sulfonamide
  • 3,5-dinitro-N,N-di(n-propyl)sulfanilamide
  • Benzenesulfonamide, 4-(dipropylamino)-3,5-dinitro-
  • Ryzelan
  • Rycelan
  • Rycelon
  • N4,N4-Dipropyl-3,5-dinitrosulfanilamide
  • 4-(dipropylamino)-3,5-dinitro-benzenesulfonamide
  • Rizelan
  • Oryzalin, 1
  • Oryzalin (Standard)
  • 4-Dipropylamino-3,5-dinitrobenzenesulfonamide
  • Oryzalin, analytical standard
  • Sulfanilamide, 3,5-dinitro-N(sup 4),N(sup 4)-dipropyl-
  • Oryzalin, PESTANAL(R), analytical standard
Show all 28 synonyms
  • Sulfanilamide, 3,5-dinitro-N4,N4-dipropyl-
  • 3,5-dinitro-N(4),N(4)-dipropylsulfanilamide
  • 4-(Dipropylamino)-3,5-dinitrobenzenesulfonimidic acid #

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
Yellow-orange crystalsexp.
Odour
No appreciable odorexp.
Melting point
137 to 138exp.
Boiling point
265 °Cexp.
Solubility
In water, 2.5 mg/l @ 25 °Cexp.
Vapour pressure
9.75 × 10⁻⁹ mm Hg @ 25 °Cexp.

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
346.37 g/molcalc.
Exact mass
346.0947 Dacalc.
LogP (octanol/water)
1.78calc.
Topological polar surface area
149.7 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
7calc.
Rotatable bonds
8calc.
Heavy atoms
23calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.5calc.
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
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H317May cause an allergic skin reaction.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (10)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 3077

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

Oryzalin suppliers

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

All 16 suppliers
16 of 16 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

16 suppliers in 6 countries

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Oryzalin price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Selective pre-emergence surface-applied herbicide.

Control of many annual grasses and broad-leaved weeds in crops.

Surface-applied herbicide for established bermudagrass turf, and established ornamentals.

Biochemistry: Cell division inhibitor. Preemergence control of many annual grasses and broad-leaved weeds in crops.

Use classes: Herbicides, Pesticides, Pharmaceuticals.

Pharmacological actions

  • Coccidiostats
  • Herbicides
  • Tubulin Modulators

Roles

  • agrochemical
  • antimitotic
  • herbicide
  • pesticide

Functional uses

  • Biocide

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2935.90Indicative HS code

Sulphonamides, other

World exports in 2024
$5.64B
−11.0% vs 2023, imports $8.56B
2019 to 2024
Top exporters
  1. Ireland43.1%
  2. China12.0%
  3. India * partner reported9.5%
Top importers
  1. United States23.6%
  2. Slovenia19.1%
  3. Spain11.7%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Oryzalin?

Oryzalin is a sulfonamide that is benzenesulfonamide substituted at positions 3 and 5 by nitro groups and at position 4 by a dipropylamino group. It has a role as a herbicide, an agrochemical and an antimitotic. It is an aromatic amine, a sulfonamide, a C-nitro compound and a tertiary amino compound.

What is the CAS number of Oryzalin?

The CAS registry number of Oryzalin is 19044-88-3.

What is the molecular formula and weight of Oryzalin?

The molecular formula of Oryzalin is C12H18N4O6S and its molar mass is 346.37 g/mol.

What is Oryzalin used for?

Selective pre-emergence surface-applied herbicide. Control of many annual grasses and broad-leaved weeds in crops. Surface-applied herbicide for established bermudagrass turf, and established ornamentals. Biochemistry: Cell division inhibitor. Preemergence control of many annual grasses and broad-leaved weeds in crops.

Is Oryzalin hazardous?

Oryzalin carries the GHS signal word "Warning". Main hazards: may cause an allergic skin reaction, very toxic to aquatic life, very toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Oryzalin?

Oryzalin is usually classified under HS code 293590 (Sulphonamides, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Oryzalin?

CompoundList lists 16 suppliers of Oryzalin in China, United States, France, Hong Kong and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Oryzalin in India?

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

What is the price of Oryzalin?

Suppliers quote Oryzalin 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 Oryzalin

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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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