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Aromatic building blocks

N,N'-Diacetylbenzidine

Also known as Diacetylbenzidine, 4,4'-Diacetamidobiphenyl, 4',4'''-Biacetanilide

CAS 613-35-4Formula C16H16N2O2Molar mass 268.32 g/molEC 210-338-2
GHS signal word: Danger. Pictograms: Harmful or irritant, Serious health hazard 4 suppliers listed
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N,N'-Diacetylbenzidine chemical structure, C16H16N2O2, CAS 613-35-4
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Needles from acetic acid
Melting point
328.3 °C
Solubility
Solubility in water: none
HS code
292429
Category
Aromatic building blocks
Illustrative photo, a shrink wrapped pallet of kraft paper sacks in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is N,N'-Diacetylbenzidine?

Plain description, key identifiers and synonyms

N,N'-Diacetylbenzidine is a member of biphenyls.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
N-[4-(4-acetamidophenyl)phenyl]acetamide
CAS number
613-35-4 CAS number cross-checked
EC number
210-338-2
Molecular formula
C16H16N2O2
UNII
2EE5599GQS
MDL number
MFCD00048194
InChIKey
CZVHCFKUXGRABC-UHFFFAOYSA-N
InChI
InChI=1S/C16H16N2O2/c1-11(19)17-15-7-3-13(4-8-15)14-5-9-16(10-6-14)18-12(2)20/h3-10H,1-2H3,(H,17,19)(H,18,20)
SMILES (canonical and isomeric)
CC(=O)NC1=CC=C(C=C1)C2=CC=C(C=C2)NC(=O)C

Synonyms

  • Diacetylbenzidine
  • 4,4'-Diacetamidobiphenyl
  • 4',4'''-Biacetanilide
  • 4,4'-Diacetylbenzidine
  • 4,4'-Diacetylaminobiphenyl
  • Benzidine, N,N'-diacetyl-
  • N,N'-4,4'-Biphenylylenebisacetamide
  • Acetamide, N,N'-4,4'-biphenylylenebis-
  • Biphenyl, 4,4'-diacetamido-
  • Acetamide, N,N'-(1,1'-biphenyl)-4,4'-diylbis-
  • Acetamide, N,N'-[1,1'-biphenyl]-4,4'-diylbis-
  • N,N'-(1,1'-Biphenyl)-4,4'-diylbisacetamide
  • N,N'-(1,1'-Biphenyl)-4,4'-diylbis-acetamide 4',4'''-biacetanilide
  • N,N'-Diacetyl benzidine
  • N,N-Diacetylbenzidine
  • N-[4-(4-acetamidophenyl)phenyl]acetamide
  • N,N'-(1,1'-Biphenyl)-4,4'-diylbis-acetamide
  • N-(4'-Acetylamino-biphenyl-4-yl)-acetamide
  • Benzidine,N'-diacetyl-
  • N,N'-([1,1'-biphenyl]-4,4'-diyl)diacetamide
  • N,4'-Biphenylylenebisacetamide
  • Acetamide,N'-4,4'-biphenylylenebis-
  • N,1'-Biphenyl)-4,4'-diylbis-acetamide
  • Acetamide,N'-[1,1'-biphenyl]-4,4'-diylbis-
  • 4-13-00-00373 (Beilstein Handbook Reference)
Show all 32 synonyms
  • N-{4'-acetamido-[1,1'-biphenyl]-4-yl}acetamide
  • Diacetylbenzidine, N,N-
  • 4,4'-Diacetylamino-1,1'-biphenyl
  • N,N'-biphenyl-4,4'-diyldiacetamide
  • N-{4-[4-(acetylamino)phenyl]phenyl}acetamide
  • N-[4'-(acetylamino)-1,1'-biphenyl-4-yl]acetamide
  • N-[4'-(Acetylamino)[1,1'-biphenyl]-4-yl]acetamide #

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
Needles from acetic acidexp.
Melting point
328.3 °Cexp.
Solubility
Solubility in water: noneexp.

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
268.32 g/molcalc.
Exact mass
268.1212 Dacalc.
LogP (octanol/water)
3.27calc.
Topological polar surface area
58.2 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
3calc.
Heavy atoms
20calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.13calc.
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, c1ccc(-c2ccccc2)cc1

c1ccc(-c2ccccc2)cc1

2 rings, 12 atoms, the Biphenyl ring system.

32,228 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H302Harmful if swallowed.
  • H312Harmful in contact with skin.
  • H332Harmful if inhaled.
  • H341Suspected of causing genetic defects.
  • H350May cause cancer.
Precautionary statements (16)
  • P203Obtain, read and follow all safety instructions before use.
  • 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.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P317Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P405Store locked up.
  • 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

N,N'-Diacetylbenzidine suppliers

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All 4 suppliers
4 of 4 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

4 suppliers in 4 countries

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N,N'-Diacetylbenzidine 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

Used to prepare 3,3'-dichlorobenzidine and 3,3'-dinitrobenzidine.

Research chem (eg, chemical intermediate for substituted benzidines).

How it is made

Reaction of benzidine with acetic acid or acetic anhydride

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 612-044-00-3

Health and food

  • EU Cosmetics Regulation Annex II, prohibited in cosmetics
    Name: N,N'-Diacetylbenzidine, Ref no: 1502, Annex ref: II/1502

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 N,N'-Diacetylbenzidine is traded under.

HS 2924.29Indicative HS code

Cyclic amides (including cyclic carbamates) and their derivatives, salts thereof, other

World exports in 2024
$5.69B
−5.1% vs 2023, imports $5.8B
2019 to 2024
Top exporters
  1. China32.3%
  2. Switzerland * partner reported13.6%
  3. Norway * partner reported12.8%
Top importers
  1. United States15.9%
  2. Ireland15.8%
  3. Germany11.9%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about N,N'-Diacetylbenzidine, based on the data on this page

What is N,N'-Diacetylbenzidine?

N,N'-Diacetylbenzidine is a member of biphenyls.

What is the CAS number of N,N'-Diacetylbenzidine?

The CAS registry number of N,N'-Diacetylbenzidine is 613-35-4.

What is the molecular formula and weight of N,N'-Diacetylbenzidine?

The molecular formula of N,N'-Diacetylbenzidine is C16H16N2O2 and its molar mass is 268.32 g/mol.

What is N,N'-Diacetylbenzidine used for?

Used to prepare 3,3'-dichlorobenzidine and 3,3'-dinitrobenzidine. Research chem (eg, chemical intermediate for substituted benzidines).

Is N,N'-Diacetylbenzidine hazardous?

N,N'-Diacetylbenzidine carries the GHS signal word "Danger". Main hazards: harmful if swallowed, harmful in contact with skin, harmful if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of N,N'-Diacetylbenzidine?

N,N'-Diacetylbenzidine is usually classified under HS code 292429 (Cyclic amides (including cyclic carbamates) and their derivatives, salts thereof, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy N,N'-Diacetylbenzidine?

CompoundList lists 4 suppliers of N,N'-Diacetylbenzidine in China, Hong Kong, Singapore and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of N,N'-Diacetylbenzidine?

Suppliers quote N,N'-Diacetylbenzidine 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 N,N'-Diacetylbenzidine

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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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