75-39-8 Usage
Description
Acetaldehyde ammonia is a white crystalline solid and very soluble in water. It is used
to make other chemicals and vulcanise rubber. On long exposure to air, acetaldehyde
ammonia oxidises, hardens, and turns yellow or brown in colour and reacts exothermically
with water to evolve gaseous ammonia. Acetaldehyde ammonia reacts with strong
oxidising agents and halogens, and when heated, it readily decomposes into acetaldehyde
and ammonia. It attacks copper, aluminium, zinc, and their alloys and reacts with mercury
and silver oxides to form shock-sensitive compounds.
Uses
For preparing pure acetaldehyde; in organic syntheses.
General Description
A white crystalline solid. Melting point 97°C. Boiling point 110°C (with some decomposition). An addition product between acetaldehyde and ammonia. Presents moderate fire and explosion hazard when exposed to heat or flame. Moderately toxic by ingestion and inhalation and a strong irritant. Used to make other chemicals, vulcanize rubber.
Air & Water Reactions
Resinifies (oxidizes, hardens and turns yellow or brown) on long exposure to air. Very soluble in water [Hawley]. Reacts exothermically with water to evolve gaseous ammonia.
Reactivity Profile
ACETALDEHYDE AMMONIA reacts with strong oxidizing agents and halogens. Attacks copper, aluminum, zinc and their alloys. Reacts with mercury and silver oxides to form shock-sensitive compounds [Handling Chemicals Safely 1980. p. 139]. Readily decomposes into acetaldehyde and ammonia when heated, causing the hazards of those substances [Lewis].
Health Hazard
Inhalation of material may be harmful. Contact may cause burns to skin and eyes. Inhalation of Asbestos dust may have a damaging effect on the lungs. Fire may produce irritating, corrosive and/or toxic gases. Some liquids produce vapors that may cause dizziness or suffocation. Runoff from fire control may cause pollution.
Fire Hazard
Some may burn but none ignite readily. Containers may explode when heated. Some may be transported hot.
Safety Profile
It readily decomposes into acetaldehyde and ammonia when heated, causing the hazards of these substances. Moderate fire and explosion hazard when exposed to heat or flame. Can react with oxidizing materials. When heated to decomposition it emits toxic fumes of NH3 and NOx
Check Digit Verification of cas no
The CAS Registry Mumber 75-39-8 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 7 and 5 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 75-39:
(4*7)+(3*5)+(2*3)+(1*9)=58
58 % 10 = 8
So 75-39-8 is a valid CAS Registry Number.
InChI:InChI=1/C2H7NO/c1-2(3)4/h2,4H,3H2,1H3
75-39-8Relevant articles and documents
PROCESS FOR THE CONVERSION OF ETHYLENE OXIDE TO MONOETHANOLAMINE AND ETHYLENEDIAMINE EMPLOYING A ZEOLITE
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Page/Page column 41; 42, (2018/11/26)
The present invention relates to a process for the conversion of ethylene oxide to 2-aminoethanol and/or ethane-1,2-diamine and/or linear polyethylenimines of the formula H2N- (CH2CH2NH)n-CH2CH2-NH2 wherein n≥ 1 comprising (i) providing a catalyst comprising a zeolitic material comprising YO2 and X2O3, wherein Y is a tetravalent element and X is a trivalent element; (ii) providing a gas stream comprising ethylene oxide and ammonia; (iii) contacting the catalyst provided in (i) with the gas stream provided in (ii) for converting ethylene oxide to 2-aminoethanol and/or ethane-1,2-diamine and/or linear polyethylenimines.
Solvent Effects on Equilibria of Addition of Nucleophiles to Acetaldehyde and the Hydrophilic Character of Diols
Bone, Roger,Cullis, Paul,Wolfenden, Richard
, p. 1339 - 1343 (2007/10/02)
Equilibria of addition of water, methanol, methanethiol, ammonia, methylamine, nitromethane, and ethylene glycol to acetaldehyde have been compared in water and in chloroform, and the partition coefficients of reactants and products between the two solvents have been estimated by direct and indirect methods.Single additions of oxygen nucleophiles were found to proceed equally favorably in either solvent, whereas single additions of sulfur, nitrogen, and carbon nucleophiles proceeded much further toward completion in water than in chloroform.Equilibria of acetal formation, involving methanol or ethylene glycol, were somewhat more favorable in chloroform than in water.Reexamination of the vapor pressures of ethylene glycol and related compounds over water indicated that their hydrophilic character was greater than had been supposed.
Xi:Irritant;
