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Aromatic building blocks

Diazald

Also known as Diazalo, N-nitroso-N-methyl-4-toluenesulfonamide, N-Methyl-N-nitroso-p-toluenesulfonamide

CAS 80-11-5Formula C8H10N2O3SMolar mass 214.25 g/molEC 201-252-6
GHS signal word: Danger. Pictograms: Flammable, Harmful or irritant 10 suppliers listed
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Diazald chemical structure, C8H10N2O3S, CAS 80-11-5
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Yellow crystals from benzene + petroleum ether
Melting point
62 °C
Solubility
INSOL IN WATER, SOL IN ETHER, PETROLEUM ETHER, BENZENE
HS code
293590
Category
Aromatic building blocks
Illustrative photo, yellow pigment powder in a glass jar on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Diazald?

Plain description, key identifiers and synonyms

N,4-dimethyl-N-nitrosobenzenesulfonamide is a sulfonamide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
N,4-dimethyl-N-nitrosobenzenesulfonamide
CAS number
80-11-5 CAS number cross-checkedOther or deprecated CAS: 60858-95-9
EC numbers
201-252-6, 693-083-3
Molecular formula
C8H10N2O3S
UNII
K3089966LA
MDL number
MFCD00002050
InChIKey
FFKZOUIEAHOBHW-UHFFFAOYSA-N
InChI
InChI=1S/C8H10N2O3S/c1-7-3-5-8(6-4-7)14(12,13)10(2)9-11/h3-6H,1-2H3
SMILES (canonical and isomeric)
CC1=CC=C(C=C1)S(=O)(=O)N(C)N=O

Synonyms

  • Diazalo
  • N-nitroso-N-methyl-4-toluenesulfonamide
  • N-Methyl-N-nitroso-p-toluenesulfonamide
  • N-Methyl-N-nitrosotoluene-4-sulphonamide
  • N,4-dimethyl-N-nitrosobenzenesulfonamide
  • Diazale
  • p-Tolylsulfonylmethylnitrosamide
  • Benzenesulfonamide, N,4-dimethyl-N-nitroso-
  • p-Toluenesulfonamide, N-methyl-N-nitroso-
  • p-Tolylsulfonylmethylnitrosamine
  • Methylnitroso-p-toluenesulfonamide
  • Toluene-p-sulfonylmethylnitrosamide
  • Diazogen
  • N-Nitroso-N-methyl-p-toluenesulfamide
  • N-Nitroso-N-methyl-4-tolylsulfonamide
  • N-Methyl-N-nitroso-p-tolylsulfonylamide
  • p-Tolylsulfonyl-methyl-nitrosamid
  • Diazald(R)-N-methyl-13C
  • N-Methyl-N-nitroso-4-toluenesulfonamide
  • N-Methyl-N-nitrosotoluene-4-sulfonamide
  • p-Toluenesulfonyl-N-methyl-N-nitrosamide
  • N-Methyl-N-Nitroso-p-Toluene Sulfonamide
  • N,4-dimethyl-N'-oxobenzene-1-sulfonohydrazide
  • Diazald-N-methyl-13C-N-methyl-d3
  • N-Nitroso-N-methyl-p-toluenesulfonamide
Show all 37 synonyms
  • Benzenesulfonamide,4-dimethyl-N-nitroso-
  • N,4-dimethyl-N-nitroso-benzenesulfonamide
  • N-methyl-N-nitroso-p-toluenesulphonamide
  • Diazald(R), 99%
  • 4-11-00-00478 (Beilstein Handbook Reference)
  • p-Tolylsulfonylmethylnitrosoamide
  • n-methyl-n-nitroso-p-toluensulfonamide
  • N-methyl N-nitroso-p-toluenesulfonamide
  • n-methyl-n-nitrosotoluene-p-sulphonamide
  • N-methyl-N-nitroso-p-toluenesul-fonamide
  • N-Methyl-N-nitroso, p-toluene sulfonamide
  • methyl[(4-methylphenyl)sulfonyl]nitrosoamine

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 crystals from benzene + petroleum etherexp.
Melting point
62 °Cexp.
Solubility
INSOL IN WATER, SOL IN ETHER, PETROLEUM ETHER, BENZENEexp.

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
214.25 g/molcalc.
Exact mass
214.0412 Dacalc.
LogP (octanol/water)
1.3calc.
Topological polar surface area
66.81 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
3calc.
Heavy atoms
14calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.25calc.
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
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H242Heating may cause a fire.
  • H315Causes skin irritation.
  • H317May cause an allergic skin reaction.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (27)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P234Keep only in original packaging.
  • P235Keep cool.
  • P240Ground and bond container and receiving equipment.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403Store in a well-ventilated place.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P410Protect from sunlight.
  • P411Store at temperatures not exceeding the specified limit.
  • P420Store separately.
  • P501Dispose of contents and container in accordance with local regulations.

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

Diazald suppliers

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Where suppliers are based

10 suppliers in 4 countries

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Diazald 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

In lab prepn of diazomethane.

How it is made

Prepd by action of nitrous acid on p-tolylsulfonylmethylamide: german patent 224,388 (1910 to bayer)...

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 Diazald 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 Diazald is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Diazald?

N,4-dimethyl-N-nitrosobenzenesulfonamide is a sulfonamide.

What is the CAS number of Diazald?

The CAS registry number of Diazald is 80-11-5. Other or deprecated CAS numbers: 60858-95-9.

What is the molecular formula and weight of Diazald?

The molecular formula of Diazald is C8H10N2O3S and its molar mass is 214.25 g/mol.

What is Diazald used for?

In lab prepn of diazomethane.

Is Diazald hazardous?

Diazald carries the GHS signal word "Danger". Main hazards: heating may cause a fire, causes skin irritation, may cause an allergic skin reaction. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Diazald?

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

Where can I buy Diazald?

CompoundList lists 10 suppliers of Diazald in China, Canada, India and Switzerland. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Diazald in India?

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

What is the price of Diazald?

Suppliers quote Diazald 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 Diazald

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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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