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Impurities and reference standards

Phthalohydrazide

Also known as Benzene-1,2-dicarbohydrazide, 1,2-Benzenedicarboxylic acid dihydrazide, phthalic dihydrazide

CAS 3645-45-2Formula C8H10N4O2Molar mass 194.19 g/mol
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Phthalohydrazide chemical structure, C8H10N4O2, CAS 3645-45-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
3645-45-2
Formula
C8H10N4O2
Molar mass
194.19 g/mol
HS code
292800
Category
Impurities and reference standards

What is Phthalohydrazide?

Plain description, key identifiers and synonyms

Phthalohydrazide is a chemical substance with the molecular formula C8H10N4O2 and a molar mass of 194.19 g/mol. Its CAS registry number is 3645-45-2. The IUPAC name is benzene-1,2-dicarbohydrazide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
benzene-1,2-dicarbohydrazide
CAS number
3645-45-2
Molecular formula
C8H10N4O2
MDL number
MFCD00456148
InChIKey
IKWQWOFXRCUIFT-UHFFFAOYSA-N
InChI
InChI=1S/C8H10N4O2/c9-11-7(13)5-3-1-2-4-6(5)8(14)12-10/h1-4H,9-10H2,(H,11,13)(H,12,14)
SMILES (canonical and isomeric)
C1=CC=C(C(=C1)C(=O)NN)C(=O)NN

Synonyms

  • Benzene-1,2-dicarbohydrazide
  • 1,2-Benzenedicarboxylic acid dihydrazide
  • phthalic dihydrazide
  • phtalhydrazide
  • phthalylhydrazide
  • Carnosine Impurity 19
  • 1,2-Benzenedicarboxylic acid, 1,2-dihydrazide

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
194.19 g/molcalc.
Exact mass
194.0804 Dacalc.
LogP (octanol/water)
-1.11calc.
Topological polar surface area
110.2 Ųcalc.
Hydrogen bond donors
4calc.
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

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Phthalohydrazide suppliers

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Phthalohydrazide 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

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

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 Phthalohydrazide is traded under.

HS 2928.00Indicative HS code

Organic derivatives of hydrazine or of hydroxylamine

World exports in 2024
$1.38B
−9.0% vs 2023, imports $1.52B
2019 to 2024
Top exporters
  1. Switzerland * partner reported44.0%
  2. China18.4%
  3. Italy9.4%
Top importers
  1. Brazil21.8%
  2. United States12.8%
  3. Italy10.8%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Phthalohydrazide?

Phthalohydrazide is a chemical substance with the molecular formula C8H10N4O2 and a molar mass of 194.19 g/mol. Its CAS registry number is 3645-45-2. The IUPAC name is benzene-1,2-dicarbohydrazide.

What is the CAS number of Phthalohydrazide?

The CAS registry number of Phthalohydrazide is 3645-45-2.

What is the molecular formula and weight of Phthalohydrazide?

The molecular formula of Phthalohydrazide is C8H10N4O2 and its molar mass is 194.19 g/mol.

Is Phthalohydrazide hazardous?

No GHS hazard classification for Phthalohydrazide is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Phthalohydrazide?

Phthalohydrazide is usually classified under HS code 292800 (Organic derivatives of hydrazine or of hydroxylamine). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Phthalohydrazide?

Post a free request on CompoundList and suppliers of Phthalohydrazide will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Phthalohydrazide?

Suppliers quote Phthalohydrazide 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 Phthalohydrazide

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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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