Heat transfer fluids

LM-4A series

Name: LM-4A series
Brand: Glacier Coolant

Application-tailored diol coolants

Diol-based secondary refrigerants with multiple metal-compatibility and high-temperature variants. Dilution is specified against the process temperature using pure water.

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LM-4A series product photograph — Manufacturer product photograph.

CATALOGUE TEMPERATURE REFERENCE−20°C to +100°C · model-dependent

Formulation

Modified diols

A closer look.

Pure-water dilution
Aluminium-compatible variants
High-temperature variants
LM-4ABG: pH 7.0–11.0; flash point ≥93 °C; non-hazardous per GHS (mfr. product page)
LM-4ABG: inhibited propylene glycol described by the manufacturer as food grade with low oral toxicity — a manufacturer description, not a food-contact approval (mfr. TDS, 2026-05-19)

Model and property references

LM-4A / LM-4AB / LM-4ABL: −20 to +50°C
LM-4ABG / LM-4ABGL: −20 to +100°C
Aluminium variants: LM-4ABL and LM-4ABGL
LM-4ABG chemistry: Inhibited propylene glycol, 95.6 wt% as supplied (mfr. TDS, 2026-05-19)

LM-4ABG typical product properties (mfr. TDS, 2026-05-19)

Property	Value
Colour	Colourless
Odour	Little or none
pH (50 % dilution)	8.2
Density at 20°C (kg/m³)	1048
Boiling point (°C)	161

Stated by the manufacturer as typical properties for the product as supplied at 95.6 wt%.

LM-4ABG freezing and boiling points by concentration (mfr. TDS, 2026-05-19)

Propylene glycol (wt%)	Freezing point (°C)	Boiling point (°C)
0	0	100
5	−1.6	100
10	−3.3	100
15	−5.1	100
20	−7.1	100.6
25	−9.6	101.1
30	−12.7	102.2
35	−17.3	102.8
40	−22.1	103.9
45	−27.9	104.4
50	−36.6	105.6
55	−49.2	106.1
60	—	107.2
65	—	108.3
70	—	110
75	—	113.9
80	—	118.3
85	—	125
90	—	132.2
95.6	—	161

Concentration is by weight. Select the dilution against the required protection temperature rather than relying on a single headline figure. The manufacturer tabulates no freezing point above 55 wt%.

Standard packaging: Same as LM-4: 25 kg plastic drum; 200 kg iron drum; 1100 kg ton drum; bulk tanker above 10 t

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.

View source: catalogue p.15 (PDF p.19)

Before you specify

Compatibility is listed per variant; the base LM-4A table covers stainless steel and carbon steel. Freeze protection follows the dilution used — select the concentration against the required protection temperature.

FROM FORMULATION TO APPLICATION

Select the variant, not just the family.

The original LM-4A range descriptions cover pharmaceutical, chemical and HVAC secondary-cooling applications, with separate variants for different operating duties.

01 / APPLICATION NOTE

Materials first

Provide a complete list of wetted metals, seals and polymers. Aluminium-specific variants and higher-temperature variants should be reviewed individually.

02 / APPLICATION NOTE

Dilution is part of the specification

Agree on concentration and water quality with the technical team. Do not substitute older website reference values for the catalogue model table or a current TDS.

REFERENCED MODELS

LM-4A · LM-4AB · LM-4ABL · LM-4ABG · LM-4ABGL

About these product references

Application notes are adapted from Glacier’s original product information. Unless a table states otherwise, numeric specifications follow the supplied catalogue. For the confirmed specification, obtain the current model-specific TDS and SDS. Links below point to the original source pages, not new technical documents.