Etilenoglicol (dados químicos)

Esta página providencia dados químicos suplementares sobre etileno glicol.

Material Safety Data Sheet

O manuseamento deste produto químico pode requerer precauções de segurança notáveis. É fortemente recomendado que consulte o MSDS deste produto de uma fonte fiável, como o SIRI e que siga as suas instruções. O MSDS do etileno glicol encontra-se disponível em Mallinckrodt Baker.

Estrutura e propriedades

Estrutura e propriedades
Índice de refracção, nD 1,4318 a 20 °C
Número Abbe ?
Constante dieléctrica, εr 37,4 ε0 a 25 °C
Força de ligação ?
Comprimento de ligação ?
Ângulo de ligação ?
Susceptibilidade magnética ?
Tensão superficial 47,7 dyn/cm a 20 °C
Viscosidade[1] 17,33 mPa·s a 25 °C

Propriedades termodinâmicas

Comportamento de fases
Ponto triplo 256 K (−17 °C), ? Pa
Ponto crítico 720 K (447 °C)

8,2 MPa

Variação da entalpia
padrão de fusão
, ΔfusHo
9,9 kJ/mol
Variação da entropia
padrão de fusão
, ΔfusSo
38,2 J/(mol·K)
Variação da entalpia padrão
de vaporização
, ΔvapHo
65,6 kJ/mol
Variação da entropia padrão
de vaporização
, ΔvapSo
? J/(mol·K)
Propriedades do sólido
Variação da entalpia padrão
de formação
, ΔfHosólido
? kJ/mol
Entropia molar padrão,
Sosólido
? J/(mol K)
Capacidade calorífica, cp ? J/(mol K)
Propriedades do líquido
Variação da entalpia padrão
de formação
, ΔfHolíquido
−460 kJ/mol
Entropia molar padrão,
Solíquido
166,9 J/(mol·K)
Capacidade calorífica, cp 149,5 J/(mol·K)
Propriedades do gás
Variação da entalpia padrão
de formação
, ΔfHogás
−394,4 kJ/mol
Entropia molar padrão,
Sogás
311,8 J/(mol·K)
Capacidade calorífica, cp 78 J/(mol·K) at 25 °C

Pressão de vapor do líquido

P em mm Hg 1 10 40 100 400 760
T em °C 53,0 92,1 120,0 141,8 178,5 197,3

Dados obtidos do CRC Handbook of Chemistry and Physics, 44th ed.

Ponto de solidificação de soluções aquosas

% etileno glicol
por volume
5 10 15 20 25 30 35 40 45 50
Ponto de solidificação
°C
–1,1 –2,2 –3,9 –6,7 –8,9 –12,8 –16,1 –20,6 –26,7 –33,3
Gravidade específica
d15,6°
1,004 1,006 1,012 1,017 1,020 1,024 1,028 1,032 1,037 1,040

Tabela obtida de Lange's Handbook of Chemistry, 10th ed. A gravidade específica é em referência à água a 15,6 °C.

Ver também «Typical Freezing and Boiling Points of Aqueous Solutions of DOWTHERM SR-1 and DOWTHERM-SR4000» (PDF). Dow Chemical. Consultado em 13 de Junho de 2007. Arquivado do original (PDF) em 27 de setembro de 2007 

Dados de destilação

Equilíbrio vapor-líquido para etileno glicol/água[2]
P = 760 mmHg
BP
Temp.
°C
% por mole de água
líquido vapor
110,00 79,8 99,3
116,40 61,3 98,5
124,30 55,9 97,7
124,50 55,3 97,6
126,00 48,2 97,1
128,10 42,6 96,3
129,50 41,1 96,2
130,50 38,8 95,5
131,20 36,5 95,2
135,20 28,9 92,6
136,00 28,3 92,4
138,00 24,1 90,9
142,50 21,6 88,7
149,00 17,8 85,2
158,10 12,9 77,6
167,40 10,2 70,6
178,60 6,5 56,3
184,20 3,4 37,9
   
Equilíbrio vapor-líquido para etileno glicol/metanol[2]
P = 760 mmHg
BP
Temp.
°C
% por mole de metanol
líquido vapor
66,70 93,0 99,9
73,20 82,1 99,8
79,60 66,4 99,7
84,70 53,0 99,3
90,20 45,7 99,0
93,80 40,6 98,5
101,40 36,3 97,9
102,70 35,6 97,5
104,90 32,2 96,7
105,10 22,7 94,6
109,90 21,2 93,3
113,00 19,5 92,3
121,50 13,7 86,4
149,60 10,3 74,6
157,50 4,6 51,5
166,30 3,6 42,0
175,20 2,5 30,4
183,50 1,4 18,1
189,10 0,5 6,8

Dados espectrais

UV-Vis
λmax ? nm
Absorbtividade molar, ε ?
IV
Principais bandas de absorção ? cm−1
RMN
Ressonância magnética de protão  
Ressonância magnética de carbono-13  
Outros dados de RMN  
MS
Massas dos
principais fragmentos
 

Referências

  1. Lange's Handbook of Chemistry, 10th ed. 1669-1674
  2. a b «Binary Vapor-Liquid Equilibrium Data» (Base de dados). Chemical Engineering Research Information Center. Consultado em 8 de Junho de 2007 

Excepto onde notado, os dados referem-se a condições padrão de temperatura e pressão.

É aplicável o disclaimer sobre a infocaixa de Química.

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