78-90-0 Usage
Chemical Properties
clear liquid
Uses
Different sources of media describe the Uses of 78-90-0 differently. You can refer to the following data:
1. In conjunction with cupric sulfate it is a very sensitive reagent for mercury.
2. 1,2-Diaminopropane was used as model precursor in the electron induced deposition of amorphous carbon nitride films.
Definition
ChEBI: A diamine that is propane substituted by amino groups at positions 1 and 2. Propylenediamine is commonly used as a bidentate ligand in the formation of coordination complexes.
General Description
A colorless liquid with an ammonia-like odor. Flash point 160°F. Density 0.87 g / cm3. Boiling point 243°F. Strongly irritates skin and tissue.
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
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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.
The invention relates to a propylene glycol and liquid ammonia as raw materials for preparing propylene diamine method and apparatus thereof
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Paragraph 0052-0053; 0089, (2017/08/31)
The invention relates to a method for preparing propane diamine by taking propylene glycol and liquid ammonia as raw materials. Propylene glycol and liquid ammonia are mixed in a certain ratio and are pumped into a reactor by virtue of a pump, and reaction is carried out in presence of a catalyst and hydrogen. The method for preparing the propane diamine by taking the propylene glycol and liquid ammonia as the raw materials has the advantages that a novel catalyst is adopted, catalytic performance is excellent, and long-time operation can be easily carried out; propylene glycol is subjected to hydroamination for producing a propane diamine product at lower reaction pressure, and reaction conditions are adjusted and changed, so that composition of the product can be flexibly adjusted and changed, selectivity of a target product is improved, a reaction process is simple, one-time investment of a production unit and production cost are reduced, a reaction product and a catalyst can be simply separated, and large-scale continuous industrial production can be easily realized.