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Key Documents

04078

Sigma-Aldrich

Hydrogen peroxide–Urea adduct

powder, 15-17% active oxygen basis

Synonym(s):

Carbamide Per hydrate, Carbamide peroxide, Percarbamide, Urea hydrogen peroxide

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About This Item

Linear Formula:
CO(NH2)2 · H2O2
CAS Number:
Molecular Weight:
94.07
Beilstein:
3680414
EC Number:
MDL number:
UNSPSC Code:
12352111
PubChem Substance ID:
NACRES:
NA.22

vapor pressure

23.3 mmHg ( 30 °C)

Quality Level

form

powder

composition

active oxygen, 15-17%

reaction suitability

reagent type: oxidant

mp

85-90 °C (dec.)
90-93 °C (lit.)

SMILES string

OO.NC(N)=O

InChI

1S/CH4N2O.H2O2/c2-1(3)4;1-2/h(H4,2,3,4);1-2H

InChI key

AQLJVWUFPCUVLO-UHFFFAOYSA-N

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General description

Hydrogen peroxide–Urea adduct is a compound composed of hydrogen peroxide (H2O2) and urea (CO(NH2)2) in equal amount. UHP, also known as carbamide peroxide, is manufactured industrially as a solid source of hydrogen peroxide for bleaching, disinfection, and oxidation reactions.

Application

Hydrogen peroxide–Urea adduct is used as an oxidizing agent.
Reactant which undergoes solid-state decomposition as a source of peroxide

Reactant used as an oxidant

Features and Benefits

Hydrogen peroxide–Urea (HPU) adduct is

  • Inexpensive
  • Commercially available
  • Stable solid.

Pictograms

Flame over circleCorrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Dam. 1 - Ox. Sol. 3 - Skin Irrit. 2

Storage Class Code

5.1B - Oxidizing hazardous materials

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Small-Scale Detonation of Industrial Urea-Hydrogen Peroxide (UHP )
Halleux F, et al.
Propellants, Explosives, Pyrotechnics, 47(2), e202100250-e202100250 (2022)
Donghua Alan Zhu et al.
Journal of pharmaceutical sciences, 100(8), 3529-3538 (2011-04-27)
Despite the fact that oxidation is the second most frequent degradation pathway for pharmaceuticals, means of evaluating the oxidative stability of pharmaceutical solids, especially effective stress testing, are still lacking. This paper describes a novel experimental method for peroxide-mediated oxidative
N. O. Mahmoodi, et al.,
Synthetic Communications, 40, 3181-3185 (2010)
T. Michel, et al.,
J. Mol. Catal. A: Chem., 340, 9-14 (2011)
Value for your profession. Optimize whitening success, and grow your practice.
Cathleen B Stewart et al.
Texas dental journal, 129(11), 1222-1225 (2013-03-16)

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