Priority Substances List Assessment Report for Road Salts

2.0 Summary of Information Critical to Assessment of "Toxic" Under CEPA 1999

2.1.2 Physical and chemical properties

Table 1 Physical-chemical properties of road salts 1

Substance

CAS No.

Specific application

Molecular weight

Eutectic2 temperature (°C)

Working3 temperature (°C)

Water solubility (g/100mL)
(°C)

Sodium chloride, NaCl

7647-14-5

Road de-icer and anti-icer, de-icing additive for sand

58.44

-21

0 to -15

35.7 (0)
39.12 (100)

Calcium chloride, CaCl2

10043-52-4

Road de-icer, de-icing additive, anti-icer, suppressant, road construction

110.99

-51.1

<-23

37.1 (0)
42.5 (20)

Mixture of sodium/calcium chloride (80/20 mix)

 

Road de-icer, road anti-icer

 

n.a.

-12

 

Magnesium chloride, MgCl2

7786-30-3

Road de-icer, de-icing additive, road anti-icer, dust suppressant

95,21

-33.3

-15

54.25 (20)
72.7 (100)

Mixture of sodium/ magnesium chloride (80/20 mix)

 

Road de-icer

 

n.a.

<-15

 

Potassium chloride, KCl

7447-40-7

Alternative road de-icer

74.55

-10.5

-3.89

56.7 (100)

Sodium ferrocyanide, Na4Fe(CN)6·10H2O

13601-19-9

Anti-caking additive

484.07

 

 

31.85 (20)
156.5 (98)

Ferric ferrocyanide, Fe4[Fe(CN)6]3

14038-43-8

Anti-caking additive

859,25

 

 

insoluble

  1. Physical-chemical properties are from Weast et al. (1989) and Chang et al. (1994).
  2. Eutectic temperature refers to the lowest temperature at which the substance will melt ice.
  3. Working temperature refers to the lowest effective de-icing temperature.
Report a problem or mistake on this page
Please select all that apply:

Thank you for your help!

You will not receive a reply. For enquiries, contact us.

Date modified: