| Phosphate content (calculated as phosphoric acid), percent, minimum |
0.56% |
0.67% |
Paragraph 3.3.1 |
| pH value of a 50 percent aqueous solution (by volume) at 25° ±3°C (77° ±5°F) |
7.2 to 7.8 |
7.5 |
ASTM D1287 |
| Boiling point, minimum |
165°C |
174°C |
ASTM D1120 |
| Ash content, percent by weight, maximum |
0.52% |
0.52% |
ASTM D1119 |
| Specific gravity of undiluted material at 15.5°C/15.5°C (60°F/60°F) |
1.111 to 1.123 |
1.121 |
ASTM D1122 |
| Viscosity at 37.7°C (100°F), centistokes, minimum |
9.0 |
9.3 |
ASTM D445 |
| NaMBT Properties |
Requirement |
Typical Result |
Test Method |
| Color |
Not darker than 15 |
8 |
ASTM D1544 |
| Specific gravity at 25°C/25°C (77°F/77°F) |
1.27 ± 0.03 |
1.24 |
ASTM D1122 |
| Suspended matter |
None |
None |
Visual |
| Solubility at 25°C ± 5°C (77° ± 8°F) in: |
|
|
Visual |
| Water after 24 hours |
Soluble; slight haze, maximum |
Conforms |
|
| Ethylene glycol after 24 hours |
Soluble; no haze or cloudiness |
Conforms |
|
| Water and ethylene glycol after 16 hours |
Soluble; slight opalescence, maximum |
Conforms |
|
| Free alkalinity at 25° ±3°C (77° ±5°F), grams of NaOH per 100 mL of sample |
0.05 to 0.75 |
0.20 |
ASTM D1121 |
