6-3
Chapter 6 COOLANT
LLC Specification
LLC shall be examined according to JIS K2234, Section 7 (Test method), and satisfy this requirements. General
matters and the specimen sampling shall comply with JIS K2234.
Table 6-2 LLC Specification
Property Standard
Appearance No precipitation
Density
Minimum 1.112 g/cm
3
[69.4199 lb/ft
3
] (20/
20°C) [68/68°F]
(Stock solution)
Water content Maximum 5.0 weight % (Stock solution)
Frozen temperature
30 vol % Maximum -14.5°C [6°F]
50 vol % Maximum -34.0°C [-29°F]
Boiling temperature 155°C [311°F] or higher (Stock solution)
pH 7.0 to 11.0 (30 vol %)
Bubbling character
(ASTM D3306-01)
30 vol % 4.0 ml or less
33
1/3 vol %
150 ml [0.032 gal] or less, Disappearance of
bubble within 5 seconds.
Hard water adaptability 1.0 or less (50 vol %)
Metallic causticity
(88±2°C
[190.4±35.6°F],
336±2 Hr,
30 vol % (E.G),
50 vol % (P.G))
Metal specimen
Mass
change
Aluminum ±0.30 mg/cm
2
Cast iron ±0.15 mg/cm
2
Steel ±0.15 mg/cm
2
Brass ±0.15 mg/cm
2
Solder ±0.30 mg/cm
2
Copper ±0.15 mg/cm
2
Appearance of the specimen
after testing
No visible signs of corrosion on the surface
excluding the area contacting to spacer.
However, discoloration is acceptable.
Bubbling during the test Not bubbling overflow
Properties of
liquid after the
test
pH 6.5 to 11.0
pH change ±1.0
Precipitation 0.5 vol % or less
Appearance of liquid
No remarkable discoloration, separation
and gel generation.
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