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Impurities and reference standards

Dihydroxyurea

Also known as Urea, N,N'-dihydroxy-, N,N'-dihydroxyurea, N',N-Dihydroxyurea

CAS 686-68-0Formula CH4N2O3Molar mass 92.05 g/mol
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Dihydroxyurea chemical structure, CH4N2O3, CAS 686-68-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
686-68-0
Formula
CH4N2O3
Physical form
Crystals
Melting point
102.2 to 106.1 °C
HS code
292800
Category
Impurities and reference standards
Illustrative photo, drums, an IBC tote and sacks in a chemical warehouse in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Dihydroxyurea?

Plain description, key identifiers and synonyms

Dihydrourea is a colorless prisms. (NTP, 1992)

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,3-dihydroxyurea
CAS number
686-68-0 CAS number cross-checked
Molecular formula
CH4N2O3
UNII
16UJ4Q60DX
InChIKey
IBTSIFIGTARYRB-UHFFFAOYSA-N
InChI
InChI=1S/CH4N2O3/c4-1(2-5)3-6/h5-6H,(H2,2,3,4)
SMILES (canonical and isomeric)
C(=O)(NO)NO

Synonyms

  • Urea, N,N'-dihydroxy-
  • N,N'-dihydroxyurea
  • N',N-Dihydroxyurea
  • dihydrourea
  • Dihydroxyurea, 1,3-
  • Urea, N,N'-dihydroxy-(9CI)
  • 1,3-Dihydroxyurea
  • Urea, 1,3-dihydroxy-
  • Hydroxy Urea Impurity 1
  • hydroxyaminoketone
  • Urea,3-dihydroxy-
  • Urea,N'-dihydroxy-
  • Urea, n,n-dihydroxy-

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

Physical form
Crystalsexp.
Melting point
102.2 to 106.1 °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
92.05 g/molcalc.
Exact mass
92.0222 Dacalc.
LogP (octanol/water)
-0.94calc.
Topological polar surface area
81.59 Ųcalc.
Hydrogen bond donors
4calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
0calc.
Heavy atoms
6calc.
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

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.

Dihydroxyurea suppliers

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Dihydroxyurea price

Indicative price range per kg from live supplier offers

No published prices right now

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

Frequently asked questions

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

What is Dihydroxyurea?

Dihydrourea is a colorless prisms. (NTP, 1992)

What is the CAS number of Dihydroxyurea?

The CAS registry number of Dihydroxyurea is 686-68-0.

What is the molecular formula and weight of Dihydroxyurea?

The molecular formula of Dihydroxyurea is CH4N2O3 and its molar mass is 92.05 g/mol.

Is Dihydroxyurea hazardous?

No GHS hazard classification for Dihydroxyurea 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 Dihydroxyurea?

Dihydroxyurea 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 Dihydroxyurea?

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

What is the price of Dihydroxyurea?

Suppliers quote Dihydroxyurea 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 Dihydroxyurea

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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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