Refrigerant 500 (Azeotrope of R-12 and R-152a) properties of saturated liquid and saturated vapor

From ASHRAE (1997), with permission

Values shown in red are at the boiling point
Values shown in bold are at the critical point

Temp., °C

Absolute pressure, MPa

Density, kg/m3

Volume, m3/kg

Enthalpy, kJ/kg

Entropy, kJ/kg·K

Specific heat, cp, kJ/kg·K

cp/cv

Velocity of sound, m/s

Viscosity,
10-6 Pa·s

Thermal cond., mW/m·K

Surface tension, mN/m

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

-70

0.01490

1427.7

1.1277

132.22

346.69

0.7162

1.7719

1.031

0.591

-

-

-

571.3

-

112.1

-

-

-68

0.01688

1422.6

1.0045

133.92

347.77

0.7245

1.7669

1.026

0.596

-

-

-

554.3

-

111.3

-

-

-66

0.01906

1417.6

0.89695

135.63

348.85

0.7328

1.7621

1.021

0.600

-

-

-

537.9

-

110.5

-

-

-64

0.02148

1412.5

0.80283

137.36

349.92

0.7411

1.7574

1.017

0.605

-

-

-

522.3

-

109.7

-

-

-62

0.02414

1407.5

0.72024

139.10

351.00

0.7494

1.7529

1.013

0.610

-

-

-

507.2

-

108.9

-

-

-60

0.02706

1402.4

0.64758

140.85

352.07

0.7576

1.7486

1.009

0.614

-

-

-

492.8

-

108.1

-

-

-58

0.03027

1397.2

0.58351

142.62

353.15

0.7659

1.7444

1.006

0.619

-

-

-

479.0

-

107.3

-

-

-56

0.03379

1392.1

0.52687

144.40

354.22

0.7741

1.7404

1.002

0.623

-

-

-

465.7

-

106.5

-

-

-54

0.03762

1386.9

0.47669

146.19

355.30

0.7823

1.7365

1.000

0.628

-

-

-

453.0

-

105.7

-

-

-52

0.04181

1381.7

0.43213

148.00

356.37

0.7905

1.7327

0.997

0.633

-

-

-

440.7

-

104.9

-

-

-50

0.04637

1376.5

0.39248

149.82

357.44

0.7987

1.7291

0.995

0.638

-

-

-

429.0

-

104.1

-

-

-48

0.05132

1371.3

0.35712

151.65

358.51

0.8068

1.7256

0.994

0.642

-

-

-

417.7

-

103.3

-

-

-46

0.05669

1366.1

0.32553

153.50

359.58

0.8150

1.7222

0.992

0.647

-

-

-

406.8

-

102.6

-

-

-44

0.06250

1360.8

0.29724

155.36

360.64

0.8231

1.7190

0.991

0.652

-

-

-

396.3

-

101.8

-

-

-42

0.06878

1355.5

0.27186

157.24

361.70

0.8313

1.7158

0.990

0.657

-

-

-

386.3

-

101.0

-

-

-40

0.07556

1350.1

0.24905

159.13

362.76

0.8394

1.7128

0.990

0.662

-

-

-

376.6

-

100.2

-

-

-38

0.08286

1344.8

0.22852

161.03

363.82

0.8475

1.7099

0.990

0.667

-

-

-

367.2

-

99.4

-

-

-36

0.09071

1339.4

0.21000

162.95

364.87

0.8556

1.7070

0.990

0.672

-

-

-

358.2

-

98.7

-

-

-34

0.09915

1334.0

0.19326

164.89

365.92

0.8637

1.7043

0.991

0.677

-

-

-

349.6

-

97.9

-

-

-33.51

0.10132

1332.7

0.18937

165.37

366.17

0.8657

1.7036

0.991

0.679

-

-

-

347.5

-

97.7

-

-

Temp., °C

Absolute pressure, MPa

Density, kg/m3

Volume, m3/kg

Enthalpy, kJ/kg

Entropy, kJ/kg·K

Specific heat, cp, kJ/kg·K

cp/cv

Velocity of sound, m/s

Viscosity,
10-6 Pa·s

Thermal cond., mW/m·K

Surface tension, mN/m

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

-32

0.10819

1328.6

0.17811

166.83

366.96

0.8718

1.7017

0.992

0.683

-

-

-

341.2

-

97.1

-

-

-30

0.11787

1323.1

0.16438

168.80

368.00

0.8799

1.6991

0.994

0.688

-

-

-

333.1

-

96.3

-

-

-28

0.12823

1317.6

0.15191

170.77

369.04

0.8879

1.6967

0.996

0.694

-

-

-

325.4

-

95.6

-

-

-26

0.13929

1312.1

0.14057

172.76

370.07

0.8960

1.6943

0.998

0.699

-

-

-

317.9

-

94.8

-

-

-24

0.15108

1306.5

0.13024

174.77

371.10

0.9040

1.6920

1.000

0.705

-

-

-

310.6

-

94.0

-

-

-22

0.16364

1300.9

0.12082

176.79

372.12

0.9121

1.6898

1.003

0.711

-

-

-

303.6

-

93.2

-

-

-20

0.17700

1295.3

0.11222

178.83

373.14

0.9201

1.6877

1.007

0.717

-

-

-

296.9

-

92.5

-

-

-18

0.19120

1289.6

0.10434

180.88

374.15

0.9281

1.6856

1.010

0.723

-

-

-

290.3

-

91.7

-

-

-16

0.20627

1283.9

0.09713

182.94

375.16

0.9361

1.6836

1.015

0.729

-

-

-

284.0

-

90.9

-

-

-14

0.22225

1278.1

0.09052

185.02

376.16

0.9441

1.6817

1.019

0.736

-

-

-

277.9

-

90.2

-

-

-12

0.23916

1272.3

0.08444

187.11

377.15

0.9521

1.6798

1.024

0.742

-

-

-

272.0

-

89.4

-

-

-10

0.25705

1266.5

0.07886

189.22

378.14

0.9601

1.6780

1.029

0.749

-

-

-

266.3

-

88.6

-

-

-8

0.27596

1260.6

0.07371

191.35

379.12

0.9681

1.6763

1.035

0.756

-

-

-

260.8

-

87.9

-

-

-6

0.29591

1254.7

0.06897

193.49

380.10

0.9761

1.6746

1.041

0.763

-

-

-

255.4

-

87.1

-

-

-4

0.31695

1248.8

0.06459

195.64

381.07

0.9841

1.6730

1.047

0.771

-

-

-

250.2

-

86.3

-

-

-2

0.33912

1242.8

0.06055

197.81

382.03

0.9920

1.6714

1.054

0.778

-

-

-

245.2

-

85.5

-

-

0

0.36246

1236.7

0.05680

200.00

382.98

1.0000

1.6699

1.062

0.786

-

-

-

240.4

-

84.8

-

-

2

0.38699

1230.6

0.05334

202.20

383.93

1.0080

1.6684

1.069

0.794

-

-

-

235.6

-

84.0

-

-

4

0.41277

1224.4

0.05012

204.42

384.87

1.0159

1.6670

1.077

0.802

-

-

-

231.1

-

83.2

-

-

6

0.43982

1218.2

0.04714

206.65

385.80

1.0239

1.6656

1.086

0.810

-

-

-

226.6

-

82.5

-

-

Temp., °C

Absolute pressure, MPa

Density, kg/m3

Volume, m3/kg

Enthalpy, kJ/kg

Entropy, kJ/kg·K

Specific heat, cp, kJ/kg·K

cp/cv

Velocity of sound, m/s

Viscosity,
10-6 Pa·s

Thermal cond., mW/m·K

Surface tension, mN/m

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

8

0.46820

1212.0

0.04437

208.90

386.72

1.0318

1.6643

1.095

0.819

-

-

-

222.3

-

81.7

-

-

10

0.49793

1205.6

0.04179

211.16

387.63

1.0397

1.6630

1.104

0.828

-

-

-

218.2

-

80.9

-

-

12

0.52907

1199.2

0.03939

213.44

388.53

1.0477

1.6617

1.114

0.837

-

-

-

214.1

-

80.1

-

-

14

0.56165

1192.8

0.03716

215.74

389.43

1.0556

1.6605

1.124

0.846

-

-

-

210.2

-

79.3

-

-

16

0.59571

1186.3

0.03507

218.05

390.31

1.0635

1.6593

1.135

0.856

-

-

-

206.4

-

78.6

-

-

18

0.63129

1179.7

0.03312

220.38

391.19

1.0714

1.6581

1.146

0.866

-

-

-

202.7

-

77.8

-

-

20

0.66844

1173.0

0.03130

222.73

392.05

1.0794

1.6570

1.157

0.876

-

-

-

199.1

-

77.0

-

-

22

0.70719

1166.3

0.02959

225.09

392.90

1.0873

1.6558

1.169

0.887

-

-

-

195.6

-

76.2

-

-

24

0.74759

1159.4

0.02800

227.47

393.74

1.0952

1.6548

1.181

0.897

-

-

-

192.2

-

75.4

-

-

26

0.78968

1152.5

0.02650

229.87

394.57

1.1031

1.6537

1.194

0.908

-

-

-

188.9

-

74.6

-

-

28

0.83350

1145.6

0.02510

232.28

395.38

1.1110

1.6526

1.207

0.920

-

-

-

185.7

-

73.9

-

-

30

0.87911

1138.5

0.02379

234.71

396.18

1.1189

1.6516

1.221

0.931

-

-

-

182.6

-

73.1

-

-

32

0.92653

1131.3

0.02255

237.16

396.97

1.1269

1.6506

1.235

0.943

-

-

-

179.5

-

72.3

-

-

34

0.97581

1124.0

0.02139

239.63

397.75

1.1348

1.6496

1.250

0.955

-

-

-

176.6

-

71.5

-

-

36

0.1027

1116.7

0.02029

242.12

398.50

1.1427

1.6486

1.265

0.968

-

-

-

173.7

-

70.7

-

-

38

0.1080

1109.2

0.01926

244.62

399.25

1.1506

1.6476

1.280

0.981

-

-

-

170.9

-

69.9

-

-

40

1.1353

1101.6

0.01829

247.15

399.97

1.1586

1.6466

1.296

0.994

-

-

-

168.2

-

69.1

-

-

45

1.2822

1082.0

0.01609

253.56

401.71

1.1784

1.6441

1.338

1.029

-

-

-

161.6

-

67.0

-

-

50

1.4426

1061.6

0.01418

260.10

403.31

1.1984

1.6415

1.383

1.066

-

-

-

155.5

-

65.0

-

-

55

1.6173

1040.2

0.01251

266.79

404.77

1.2184

1.6389

1.430

1.105

-

-

-

149.8

-

62.9

-

-

Temp., °C

Absolute pressure, MPa

Density, kg/m3

Volume, m3/kg

Enthalpy, kJ/kg

Entropy, kJ/kg·K

Specific heat, cp, kJ/kg·K

cp/cv

Velocity of sound, m/s

Viscosity,
10-6 Pa·s

Thermal cond., mW/m·K

Surface tension, mN/m

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

Vapor

Liquid

Vapor

Liquid

Vapor

Liquid

Vapor

60

1.8071

1017.6

0.01104

273.64

406.06

1.2385

1.6360

1.481

1.147

-

-

-

-

-

60.8

-

-

65

2.0129

993.6

0.00974

280.68

407.15

1.2589

1.6329

-

-

-

-

-

-

-

-

-

-

70

2.2355

967.8

0.00859

287.93

407.98

1.2795

1.6293

-

-

-

-

-

-

-

-

-

-

75

2.4760

939.9

0.00756

295.44

408.50

1.3004

1.6252

-

-

-

-

-

-

-

-

-

-

80

2.7357

909.2

0.00663

303.29

408.63

1.3220

1.6202

-

-

-

-

-

-

-

-

-

-

85

3.0157

874.7

0.00578

311.58

408.23

1.3443

1.6141

-

-

-

-

-

-

-

-

-

-

90

3.3180

835.0

0.00499

320.50

407.07

1.3679

1.6063

-

-

-

-

-

-

-

-

-

-

95

3.6446

786.6

0.00424

330.48

404.73

1.3938

1.5955

-

-

-

-

-

-

-

-

-

-

100

3.9986

721.7

0.00347

342.64

400.12

1.4248

1.5788

-

-

-

-

-

-

-

-

-

-

105

4.3850

589.0

0.00241

364.72

386.47

1.4791

1.5367

-

-

-

-

-

-

-

-

-

-

105.6

4.426

498

0.00201

378.6

378.6

1.512

1.512

inf.

inf.

inf.

0

0

-

-

inf.

inf.

0.00