| Unexpected cold snaps can cause havoc in areas not accustomed to servicing portable restrooms in freezing conditions |
PORTABLE RESTROOM
FREEZING CHART
SALT
½ lb. per gallon of water protects to 26 F
1 lb. per gallon of water protects to 19 F
1 – ½ lbs. per gallon of water protects to 11 F
2 lbs. per gallon of water protects to 0 F
(Note: 2 lbs. of salt is the maximum amount dissolvable in one gallon of water.)
METHANOL
5% or 6.4 oz. per gallon of water protects to 28 F
10% or 12.8 oz. per gallon of water protects to 22 F
15% or 19.2 oz. per gallon of water protects to 17 F
20% or 25.6 oz. per gallon of water protects to 11 F
25% or 32.0 oz. per gallon of water protects to 4 F
30% or 38.4 oz. per gallon of water protects to –4 F
(Note: Methanol and water mixtures can be flammable when the percentage of methanol exceeds about 33%. Refer
to Methanol Material Safety Data Sheet for health and safety data.)
SALT & METHANOL COMBINED
Start with maximum salt solution, then add methanol at:
5% or 6.4 oz. per gallon of water protects to –6 F
10% or 12.8 oz. per gallon of water protects to –11 F
15% or 19.2 oz. per gallon of water protects to –17 F
20% or 25.6 oz. per gallon of water protects to –21 F
25% or 32.0 oz. per gallon of water protects to –30 F
30% or 38.4 oz. per gallon of water protects to –40 F
(Note: Methanol and water mixtures can be flammable when the percentage of methanol exceeds about 33%.
Refer to Methanol Material Safety Data Sheet for health and safety data.)
QUESTIONS OR CONCERNS? CONTACT:
WALEX PRODUCTS COMPANY, INC.
800.338.3155 910.371.2242 FAX: 910.371.2094
FREEZING CHART
SALT
½ lb. per gallon of water protects to 26 F
1 lb. per gallon of water protects to 19 F
1 – ½ lbs. per gallon of water protects to 11 F
2 lbs. per gallon of water protects to 0 F
(Note: 2 lbs. of salt is the maximum amount dissolvable in one gallon of water.)
METHANOL
5% or 6.4 oz. per gallon of water protects to 28 F
10% or 12.8 oz. per gallon of water protects to 22 F
15% or 19.2 oz. per gallon of water protects to 17 F
20% or 25.6 oz. per gallon of water protects to 11 F
25% or 32.0 oz. per gallon of water protects to 4 F
30% or 38.4 oz. per gallon of water protects to –4 F
(Note: Methanol and water mixtures can be flammable when the percentage of methanol exceeds about 33%. Refer
to Methanol Material Safety Data Sheet for health and safety data.)
SALT & METHANOL COMBINED
Start with maximum salt solution, then add methanol at:
5% or 6.4 oz. per gallon of water protects to –6 F
10% or 12.8 oz. per gallon of water protects to –11 F
15% or 19.2 oz. per gallon of water protects to –17 F
20% or 25.6 oz. per gallon of water protects to –21 F
25% or 32.0 oz. per gallon of water protects to –30 F
30% or 38.4 oz. per gallon of water protects to –40 F
(Note: Methanol and water mixtures can be flammable when the percentage of methanol exceeds about 33%.
Refer to Methanol Material Safety Data Sheet for health and safety data.)
QUESTIONS OR CONCERNS? CONTACT:
WALEX PRODUCTS COMPANY, INC.
800.338.3155 910.371.2242 FAX: 910.371.2094
The above information is furnished as a guideline. There may be other solutions available to solve a freezing
portable restroom problem.
portable restroom problem.
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Serving the American Liquid Waste Industry Since 2002