Diols
Alcohols carrying two hydroxyl groups. Propylene glycol (MPG) is the best-known member of this family.
THE LM PORTFOLIO
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4 product familiesLM SERIES / GLACIER COOLANT
Heat transfer fluids
LM-8A
Inorganic salt secondary refrigerant
−40°C to +100°C (product list, April 2026)
Modified inorganic acid salt solutionExplore
Additives
LMH
Brine corrosion inhibitor
System-specific programme
Film-forming corrosion-inhibitor packageExplore
Additives
LMT series
Circulating-water corrosion and scale control
System-specific programme
Corrosion and scale-inhibitor formulationExplore
Additives
LMZ series
Alcohol-coolant performance additives
Base-fluid dependent
Concentrated inorganic and/or organic additivesExplore
Reference values from the Chaoyang Guangda LM catalogue — typical figures rather than guaranteed limits. Confirm the exact model and concentration on the current model TDS before specifying.
CHEMISTRY IN PLAIN TERMS
The catalogue names a formulation.
Here is what those names mean.
If you are comparing against what already runs in your plant, these are the families to look for.
Ternary alcohols
Three-component alcohol blends; glycerol is a common base.
Organic acid salts
Formate, acetate and similar organic salts — the “brine” type of secondary refrigerant.
Inorganic acid salt solution
Salt-based fluids, normally supplied with an inhibitor package for metal protection.
Alkanes / synthetic hydrocarbons
Hydrocarbon fluids for dry, non-aqueous loops and higher-temperature duties.
Polysiloxane
Silicone-based fluids, chosen for temperature stability.
Perfluorinated compounds
Fluorinated fluids for electrical and extreme-temperature applications.
A \u201cmodified diol\u201d is a formulated product rather than pure MPG: exact composition, concentration and inhibitor package are confirmed on the TDS for the model you specify.
PORTFOLIO REFERENCE
Brine, glycol and alcohol
against the LM series.
Operating temperature, corrosivity, toxicity, flammability and flash point across the three conventional secondary coolants and the LM models covered by the manufacturer’s product summary.
| Product | Operating temperature (°C) | Corrosivity | Toxicity | Flammability | Flash point (°C) |
|---|---|---|---|---|---|
| Brine | −40 to +90 | Yes | Low | None | N/A |
| Glycol | −30 to +140 | Yes | Low | Yes | 111 |
| Alcohol | −80 to +40 | Yes | Low | Yes | 12 |
| LM-1 | −100 to +40 | No | Low | Yes | 20 |
| LM-2 | −80 to +40 | No | Low | Yes | 20 |
| LM-3 | −80 to +40 | No | None | Yes | 20 |
| LM-4 | −35 to +150 | No | Low | Yes | 120 |
| LM-4A (food) | −30 to +100 | No | None | Yes | 100 |
| LM-8 | −50 to +100 | No | Low | None | N/A |
| LM-8A | −40 to +90 | No | Low | None | N/A |
| LM-11 | −75 to +150 | No | Low | Yes | 64 |
| LM-11D | −35 to +180 | No | Low | Yes | 94 |
| LM-12 (cold storage) | −25 to 0 | No | Low | None | N/A |
| LM-13 (cold storage) | −30 | No | Low | None | N/A |
From the manufacturer’s product summary, August 2021. Three models carry a different range in the current catalogue: LM-11 is −100 to +100 °C, LM-4A is −20 to +100 °C and LM-8A is −40 to +100 °C, against −75 to +150, −30 to +100 and −40 to +90 in this summary. Flammability records that document’s own category, which tracks whether it lists a flash point for the family. The GB 30000.7-2013 classification for LM-4 records “not a flammable liquid” at 55 % and 75 % concentration, and those reports are on the test reports page. The 2021 summary also lists LM-2, LM-12 and LM-13; the current catalogue covers the models in the finder above.