78-90-0 Usage
Description
1,2-Diaminopropane, also known as Propylenediamine, is a colorless liquid with an ammonia-like odor. It is a diamine that is propane substituted by amino groups at positions 1 and 2. It has a flash point of 160°F, a density of 0.87 g/cm3, and a boiling point of 243°F. It is a strong irritant to skin and tissue and is commonly used as a bidentate ligand in the formation of coordination complexes.
Uses
1. Used in Electronics Industry:
1,2-Diaminopropane is used as a model precursor for the electron-induced deposition of amorphous carbon nitride films, which are essential in the development of advanced electronic devices and components.
2. Used in Chemical Analysis:
In conjunction with cupric sulfate, 1,2-Diaminopropane serves as a very sensitive reagent for detecting mercury, playing a crucial role in environmental and industrial monitoring of mercury contamination.
3. Used in Chemical Synthesis:
As a bidentate ligand, 1,2-Diaminopropane is utilized in the formation of coordination complexes, which are vital in various chemical reactions and synthesis processes across different industries.
Air & Water Reactions
Very hygroscopic. Very soluble in water.
Reactivity Profile
1,2-Diaminopropane 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. May generate hydrogen, a flammable gas, in combination with strong reducing agents such as hydrides.
Health Hazard
May cause toxic effects if inhaled or ingested/swallowed. Contact with substance may cause severe burns to skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.
Fire Hazard
Flammable/combustible material. May be ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Flammability and Explosibility
Flammable
Safety Profile
Moderately toxic by
ingestion, sktn contact, and subcutaneous
routes. A corrosive irritant to eyes, skin, and
mucous membranes. Dangerous fire hazard
when exposed to heat, flames, oxidizers. To
fight fire, use alcohol foam. When heated to
decomposition it emits toxic fumes of NOx.
Used as an intermedate in production of
petroleum and polymer additives, and
surfactants. See also AMINES.
Purification Methods
Purify the diamine by azeotropic distillation with toluene. Then distil it. Store it in a CO2 free atmosphere. [Horton et al. Anal Chem 27 269 1955, Beilstein 4 IV 1255.]
Check Digit Verification of cas no
The CAS Registry Mumber 78-90-0 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 7 and 8 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 78-90:
(4*7)+(3*8)+(2*9)+(1*0)=70
70 % 10 = 0
So 78-90-0 is a valid CAS Registry Number.
InChI:InChI=1/C3H10N2/c1-3(5)2-4/h3H,2,4-5H2,1H3/t3-/m0/s1
78-90-0Relevant articles and documents
Synthesis of 1,2-propanediamine via reductive amination of isopropanolamine over Raney Ni under the promotion of K2CO3
Yu, Qin-Wei,Li, Ya-Ni,Zhang, Qian,Wang, Wei-Qiang,Mei, Su-Ning,Hui, Feng,Shi, Jian,Zhao, Feng-Wei,Yang, Jian-Ming,Lu, Jian
, p. 2019 - 2026 (2019/09/09)
Catalytic amination of isopropanolamine and ammonia to 1,2-propanediamine over Raney Ni with potassium carbonate as the additive was reported. Characterization of N2 adsorption–desorption and XRD were performed to reveal the textural and structural properties of the catalysts. With the additive of potassium carbonate, the selectivity of 1,2-propanediamine was improved, while the side generation of 2,5-dimethylpiperazine was suppressed. The catalytic reaction parameters were optimized and the yield of 1,2-propanediamine reached 80% under the optimized reaction condition.
Method of synthesizing 2-methyltriethylenediamine with 2-methylpiperazine as raw material
-
Paragraph 0017-0028, (2019/01/06)
The invention belongs to the field of fine chemical engineering and relates to a method of synthesizing 2-methyltriethylenediamine with 2-methylpiperazine as raw material. The method is to solve the problems of expensive and complicated raw materials and complex synthesis steps. The method can catalytically synthesize the 2-methyltriethylenediamine in one step only with the 2-methylpiperazine as araw material by means of TiO2/Pentasil zeolite as a catalyst. The method employs simple raw material, is simple and has high application value.
Production of Primary Amines by Reductive Amination of Biomass-Derived Aldehydes/Ketones
Liang, Guanfeng,Wang, Aiqin,Li, Lin,Xu, Gang,Yan, Ning,Zhang, Tao
supporting information, p. 3050 - 3054 (2017/03/14)
Transformation of biomass into valuable nitrogen-containing compounds is highly desired, yet limited success has been achieved. Here we report an efficient catalyst system, partially reduced Ru/ZrO2, which could catalyze the reductive amination of a variety of biomass-derived aldehydes/ketones in aqueous ammonia. With this approach, a spectrum of renewable primary amines was produced in good to excellent yields. Moreover, we have demonstrated a two-step approach for production of ethanolamine, a large-market nitrogen-containing chemical, from lignocellulose in an overall yield of 10 %. Extensive characterizations showed that Ru/ZrO2-containing multivalence Ru association species worked as a bifunctional catalyst, with RuO2 as acidic promoter to facilitate the activation of carbonyl groups and Ru as active sites for the subsequent imine hydrogenation.
