7227-91-0

Basic information

• Product Name: 3,3-dimethyl-1-phenyltriazene
• Synonyms: 3,3-dimethyl-1-phenyltriazene;1-phenyl-3,3-dimethyltriazene;PHENYLDIMETHYLTRIAZENE;PHENYL-3,3-DIMETHYLTRIAZENE;PDMT
• CAS NO: 7227-91-0
• Molecular Formula: C₈H₁₁N₃
• Molecular Weight: 149.19304
• EINECS: 230-627-7
• Mol File: 7227-91-0.mol
• Article Data: 7

Chemical Properties

• Boiling Point: 260.27°C (rough estimate)
• Flash Point: 75.74°C
• Appearance: /
• Density: 1.1269 (rough estimate)
• Vapor Pressure: 0.305mmHg at 25°C
• Refractive Index: 1.5400 (estimate)
• CAS DataBase Reference: 3,3-dimethyl-1-phenyltriazene(CAS DataBase Reference)
• NIST Chemistry Reference: 3,3-dimethyl-1-phenyltriazene(7227-91-0)
• EPA Substance Registry System: 3,3-dimethyl-1-phenyltriazene(7227-91-0)

Safety Data

• RIDADR: 2810
• HazardClass: 6.1(b)
• PackingGroup: III
• Hazardous Substances Data: 7227-91-0(Hazardous Substances Data)

Usage

Air & Water Reactions

Insoluble in water.

Reactivity Profile

3,3-dimethyl-1-phenyltriazene neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides.

Safety Profile

Poison by ingestion and intraperitoneal routes. Questionable carcinogen with experimental carcinogenic and tumorigenic data. Experimental teratogenic effects. Human mutation data reported. Decomposes explosively on attempted distillation at atmospheric pressure. When heated to decomposition it emits toxic fumes of NOx

InChI:InChI=1/C8H11N3/c1-11(2)10-9-8-6-4-3-5-7-8/h3-7H,1-2H3

Upstream product

• 100-34-5 benzene diazonium chloride 
• 124-40-3 dimethyl amine 
• 619-97-6 benzenediazonium nitrate 
• 98-95-3 nitrobenzene 
• 57-14-7 N,N-Dimethylhydrazine 
• 62-53-3 aniline 
• 128620-11-1 1-phenyl-2-bromodiazene 1-oxide 

Downstream Products

• 69217-15-8 (E)-1-methyl-2-(phenyldiazenyl)-1H-pyrrole 
• 93289-20-4 1-ethoxycarbonyl-2-phenylpyrrole 
• 955-16-8 3,4-biphenyldicarboxylic anhydride 
• 954-06-3 biphenyl-2,3-dicarboxylic acid anhydride 
• 506-59-2 N,N-dimethylammonium chloride 
• 60-09-3 aniline yellow 
• 2051-85-6 4-(phenylazo)-1,3-benzenediol 
• 2396-01-2 phenyl radical 
• 142-04-1 aniline hydrochloride 
• 92-52-4 biphenyl 
• 124-40-3 dimethyl amine 
• 71-43-2 benzene 
• 591-50-4 iodobenzene 
• 2684-02-8 benzenediazonium 

Relevant articles and documents

Diazo reactions with unsaturated compounds: XII. Reaction of 1-(p-Carboxybenzenesulfonyl)-1,3-butadiene with aryldiazonium chlorides, 1-aryl-3,3-dimethyl-1-triazenes, and aryldiazonium tetrachlorocuprates(II)

1-(p-Carboxybenzenesulfonyl)-1,3-butadiene reacts in aqueous acetone with aryldiazonium chlorides and 1-aryl-3,3-dimethyl-1-triazenes in the presence of copper(II) chloride and with tetrachlorocuprates(II) to form 1-(p-carboxybenzenesulfonyl)-4-aryl-3-chloro-1-butenes. Nauka/Interperiodica 2007.

Reactions of 1-aryl-2-bromodiazene 1-oxides with acids and bases

The reactions of 1-aryl-2-bromodiazene 1-oxides with HCl in nonaqueous media give aryldiazonium chlorides, while 1,3,3-substituted triazenes-1 are formed in the reactions with secondary amines. Using 2-(15N) label, it was shown that the aryl group does not migrate in these reactions.