1,3-Diphenylharnstoff

Nitrogen Compounds -> Urea Compounds

Industrial compound

3.00

3.0

1.239 (NTP, 1992) - Denser than water; will sink

1.239

RHOMBIC BIPYRAMIDAL PRISMS FROM ALCOHOL

ORTHORHOMBIC PRISMS FROM ALCOHOL

COLORLESS PRISMS

less than 0.1 mg/mL at 64 °F (NTP, 1992)

SPARINGLY SOL IN WATER (0.15 G/L); SAPRINGLY SOL IN ALCOHOL, ACETONE, CHLOROFORM ; MODERATELY SOL IN PYRIDINE (69.0 G/L).

SOL IN ACETIC ACID, ETHER; INSOL IN BENZENE

0.15 mg/mL

504 °F at 760 mmHg (Decomposes) (NTP, 1992)

260 °C (DECOMPOSE)

460 °F (NTP, 1992)

238 °C

239 - 240 °C

1,3-diphenylurea is an off-white powder. (NTP, 1992)

Large Crystals

Colorless solid; [HSDB] Off-white powder; [Alfa Aesar MSDS]

Solid

SUBLIMES IN CURRENT OF HYDROGEN AT 220 °C

UV: 5-361 (Organic Electronic Spectral Data, Phillips et al, John Wiley & Sons, New York) /Urea, 1,1-diphenyl/

This chemical does not meet GHS hazard criteria for 20% (1 of 5) of reports.

Warning

H302 (80%): Harmful if swallowed [Warning Acute toxicity, oral]

P261, P264, P270, P271, P280, P301+P317, P302+P352, P304+P340, P317, P321, P330, P362+P364, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 5 reports by companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Urea, N,N'-diphenyl- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Urea, N,N'-diphenyl- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

Status: Active Update: 26-03-2018 https://echa.europa.eu/registration-dossier/-/registered-dossier/20899

Urea, N,N'-diphenyl-: Does not have an individual approval but may be used under an appropriate group standard

1,3-DIPHENYLUREA is an amide. Amides/imides react with azo and diazo compounds to generate toxic gases. Flammable gases are formed by the reaction of organic amides/imides with strong reducing agents. Amides are very weak bases (weaker than water). Imides are less basic yet and in fact react with strong bases to form salts. That is, they can react as acids. Mixing amides with dehydrating agents such as P2O5 or SOCl2 generates the corresponding nitrile. The combustion of these compounds generates mixed oxides of nitrogen (NOx).

EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

SMALL SPILLS AND LEAKAGE: If a spill of this chemical occurs, FIRST REMOVE ALL SOURCES OF IGNITION, then you should dampen the solid spill material with acetone and transfer the dampened material to a suitable container. Use absorbent paper dampened with acetone to pick up any remaining material. Seal your contaminated clothing and the absorbent paper in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with acetone followed by washing with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.

RECOMMENDED RESPIRATOR: Where the neat test chemical is weighed and diluted, wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter. (NTP, 1992)

TOBACCO CALLUS PROPAGATED ON MINERAL MEDIUM CONTAINING N,N'-DIPHENYLUREA LABELED IN UREYLENE CARBON, AS SOURCE OF CYTOKININ. METABOLITE IDENTIFIED AS O-BETA-D-GLUCOSIDE IS APPROX 125 TIMES LESS ACTIVE THAN PARENT COMPD IN PROMOTING TOBACCO CELL DIVISION.

TISSUE CULTURE STUDIES WITH N,N'-DIPHENYLUREA INDICATED CONVERSION INTO AN ACTIVE FORM.

Used in organic synthesis; [HSDB]

IN ORG SYNTHESIS

Transportation Equipment Manufacturing

Urea, N,N'-diphenyl-: ACTIVE

N,N'-DIPHENYLUREA USED AS THE SOURCE OF CYTOKININ FOR CYTOKININ-DEPENDENT TOBACCO CALLUS WAS FOUND TO CONTAIN 3 CYTOKININ-ACTIVE RIBONUCLEOSIDES. HOWEVER, NO EVIDENCE WAS FOUND TO ASSOCIATE THE MODE OF ACTION OF THE NON-PURINE CYTOKININ, N,N'-DIPHENYLUREA WITH TRNA.

IT PROMOTED CALLUS GROWTH AT HIGH CONCN, ALTHOUGH GROWTH OF MOST OF CALLUS TISSUES WAS IRREGULAR.

MIXT OF N,N'-DIPHENYLUREA (PDU), GIBBERELLIC & 2-NAPHTHOXYACETIC ACIDS TESTED. MIXT OF LATTER 2 INCR SET & FINAL YIELD & ADDN OF DPU DID NOT IMPROVE THE RESULT.