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Product Name: DOWFROST* Heat Transfer Fluid Issue Date: 11/05/2007

Page 4 of 7

9. Physical and Chemical Properties

Physical State Liquid

Color Colorless

Odor Characteristic

Flash Point - Closed Cup 104 °C (219 °F)

Pensky-Martens Closed Cup ASTM D 93 (based on

major component), Propylene glycol

Flammable Limits In Air Lower: 2.6 %(V) Literature Propylene glycol

Upper: 12.5 %(V) Literature Propylene glycol

Autoignition Temperature 371 °C (700 °F)

Literature Propylene glycol

Vapor Pressure 2.2 mmHg Literature

Boiling Point (760 mmHg)

152 °C

(306 °F)

Literature .

Vapor Density (air = 1)

>1.0 Literature

Specific Gravity (H2O = 1)

1.05 20 °C/20 °C Literature

Freezing Point supercools

Melting Point Not applicable to liquids

Solubility in Water (by

weight)

100 % Literature

pH 10.0 Literature

Kinematic Viscosity 43.4 cSt @ 20 °C

Literature

10. Stability and Reactivity

Stability/Instability

Stable under recommended storage conditions. See Storage, Section 7. Hygroscopic.

Conditions to Avoid: Exposure to elevated temperatures can cause product to decompose.

Generation of gas during decomposition can cause pressure in closed systems. Avoid direct sunlight

or ultraviolet sources.

Incompatible Materials: Avoid contact with: Strong acids. Strong bases. Strong oxidizers.

Hazardous Polymerization

Will not occur.

Thermal Decomposition

Decomposition products depend upon temperature, air supply and the presence of other materials.

Decomposition products can include and are not limited to: Aldehydes. Alcohols. Ethers. Organic

acids.

11. Toxicological Information

Acute Toxicity

Ingestion

LD50, Rat, female

20,300 mg/kg

Skin Absorption

For similar material(s): LD50, Rabbit

> 10,000 mg/kg

Repeated Dose Toxicity

In rare cases, repeated excessive exposure to propylene glycol may cause central nervous system

effects.

Chronic Toxicity and Carcinogenicity

Similar formulations did not cause cancer in laboratory animals.

Developmental Toxicity

For the major component(s): Did not cause birth defects or any other fetal effects in laboratory

animals.

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