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Impurities and reference standards

Semicarbazide

Also known as Hydrazinecarboxamide, Aminourea, Carbamylhydrazine

CAS 57-56-7Formula CH5N3OMolar mass 75.07 g/molEC 200-339-6
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Harmful or irritant 53 suppliers listed
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Semicarbazide chemical structure, CH5N3O, CAS 57-56-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
57-56-7
Formula
CH5N3O
Molar mass
75.07 g/mol
EC number
200-339-6
HS code
292800
Category
Impurities and reference standards

What is Semicarbazide?

Plain description, key identifiers and synonyms

Semicarbazide is a monocarboxylic acid amide that is urea where one of the amino groups has been replaced with hydrazine. It is a monocarboxylic acid amide, a carbohydrazide, a member of ureas and a one-carbon compound.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
aminourea
CAS number
57-56-7 CAS number cross-checked
EC number
200-339-6
Molecular formula
CH5N3O
UNII
37QUC23K2X
MDL number
MFCD00042824
InChIKey
DUIOPKIIICUYRZ-UHFFFAOYSA-N
InChI
InChI=1S/CH5N3O/c2-1(5)4-3/h3H2,(H3,2,4,5)
SMILES (canonical and isomeric)
C(=O)(N)NN

Synonyms

  • Hydrazinecarboxamide
  • Aminourea
  • Carbamylhydrazine
  • Carbazamide
  • Semikarbazid
  • Aminomocovina
  • Carbamoylhydrazine
  • Carbamic acid, hydrazide
  • Urea, amino-
  • Aminoharnstoff
  • Hydrazine, carbamoyl-
  • Carbamidsaeurehydrazid
  • isosemicarbazide
  • amino-urea
  • carbamic acid hydrazide
  • Lamotrigine Impurity 12
  • 4-03-00-00177 (Beilstein Handbook Reference)
  • Semicarbazide, 6 wt% on Silica gel
  • Semicarbazide - 6 wt% on Silica gel
  • Sdccgsbi-0051066.p002
  • Semicarbazide, 6 wt. % (on silica gel)
  • Semicarbazide (6 wt. % on silica gel)

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
75.07 g/molcalc.
Exact mass
75.0433 Dacalc.
LogP (octanol/water)
-1.47calc.
Topological polar surface area
81.14 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
5calc.
Rings
0calc.
Aromatic rings
0calc.
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.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H301Toxic if swallowed.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (19)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • 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 + P316If swallowed: Get emergency medical help immediately.
  • 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).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • 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

Semicarbazide suppliers

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All 53 suppliers
30 of 30 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

53 suppliers in 12 countries

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Semicarbazide 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

Pharmacological actions

  • Carcinogens

Functional uses

  • Foamant

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

Frequently asked questions

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

What is Semicarbazide?

Semicarbazide is a monocarboxylic acid amide that is urea where one of the amino groups has been replaced with hydrazine. It is a monocarboxylic acid amide, a carbohydrazide, a member of ureas and a one-carbon compound.

What is the CAS number of Semicarbazide?

The CAS registry number of Semicarbazide is 57-56-7.

What is the molecular formula and weight of Semicarbazide?

The molecular formula of Semicarbazide is CH5N3O and its molar mass is 75.07 g/mol.

What is Semicarbazide used for?

Known uses and roles of Semicarbazide include foamant and carcinogens.

Is Semicarbazide hazardous?

Semicarbazide carries the GHS signal word "Danger". Main hazards: toxic if swallowed, causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Semicarbazide?

Semicarbazide 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 Semicarbazide?

CompoundList lists 53 suppliers of Semicarbazide in United States, China, Spain, Germany and 8 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Semicarbazide in India?

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

What is the price of Semicarbazide?

Suppliers quote Semicarbazide 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 Semicarbazide

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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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