HTP SSU-119SE - Manual (Page 34)

34
LP-199 REV. 4.15.14
VISCOSITY: The HTF viscosity over the service temperature range is based on a specific gravity 15/15
o
C (60/60
o
F) 1.053-1.063.
DOWFROST inhibited glycol-based fluid has an effective operating temperature range of -50
o
F to 250
o
F. At temperatures below -50
o
F,
increased viscosity (>1,000 centipoise) can make use of DOWFROST impractical unless larger pumps are installed. At the upper end of
the operating range for DOWFROST fluid, a maximum bulk temperature of 250
o
F is recommended. Film temperature should not
exceed 300
o
F. DOWFROST fluid can tolerate brief temperature excursions up to 100
o
F above the maximum recommended
temperatures. However, extended exposure of the fluid to temperatures in excess of 50
o
F above the maximum recommended
temperatures will result in accelerated degradation of the glycol and inhibitor systems. In addition, the film temperature should remain
within 50
o F of the bulk fluid temperature and the pressure at all points in the system should be at least 5 psi greater than the vapor
pressure exerted by the fluid to avoid localized boiling and resulting precipitation. At temperatures above 150 o F, the system must be
closed to avoid rapid oxidation of the propylene glycol, inhibitor depletion, and subsequent increased corrosion. Automatic make-up
water systems should be avoided in order to prevent undetected dilution or loss of glycol and consequent loss of freeze and corrosion
protection.
FLAMMABILITY: When mixed with water, DOWFROST is not flammable, as the fluid has no measurable flash point (Pensky-Martens
Closed Cup) in concentrations up to 80% glycol. Undiluted DOWFROST has a flash point of 214
o F (Pensky-Martens Closed Cup). It is
possible to ignite solutions of propylene if enough water has been vaporized and the concentration of propylene glycol increases to
greater than 80 percent.
INSPECTION AND TREATMENT OF HEAT TRANSFER FLUID: You can quickly determine the condition of your fluid by examining its
appearance and odor. Any drastic variation from the initial fluid specifications, such as a black or dark-grey color, presence of an oily
layer, burnt odor, or any heavy sludge in the fluid may indicate the need for replacement.
TESTING THE FLUID pH LEVEL: Control of pH between 8 and 10 is important to minimize corrosion and glycol degradation. Using
narrow range pH paper, such as pHydrion Control paper with a 7.2 to 8.8 pH range, is an easy and reliable way to read your pH level. A
pH tester can also measure alkalinity or acidity and give you an indication of the reserve alkalinity or inhibitor level of the fluid. The
desirable pH range should fall between 8.0 and 10.0. Adjustments can be made using a 50% solution of sodium hydroxide or potassium
hydroxide if the pH is approaching the acidic range (below 8.0). An inexpensive pH tester is available from Misco Products. The
accuracy of this product is +/- 0.5 pH. Contact Misco Products at 1-800-358-1100 and ask for the Dow discount.
SPILL, LEAK, AND DISPOSAL PROCEDURES: Using appropriate safety equipment, small spills may be soaked up with common
absorbent material. For large spills, the fluid should be pumped into suitable containers located in diked areas. Residual material should
be cleaned up with water. Concentrate can be handled according to local, state, and federal regulations.
EMERGENCY OVERVIEW
POTENTIAL HEALTH EFFECTS
EYE:
May cause slight transient (temporary) eye irritation.
Corneal injury is unlikely. Mists may cause eye irritation.
FIRST AID: FLUSH EYES WITH PLENTY OF WATER
SKIN CONTACT: Prolonged contact is essentially non-irritating to skin. A single prolonged exposure is not likely to result in the material
being absorbed through the skin in harmful amounts. Repeated exposure may cause flaking and softening of skin.
FIRST AID: WASH OFF IN FLOWING WATER OR SHOWER
INGESTION: Single dose oral toxicity is considered to be extremely low. No hazards anticipated from swallowing small amounts
incidental to normal handling operations.
FIRST AID: NONE REQUIRED
INHALATION: At room temperature, vapors are minimal due to physical properties. Mists may cause irritation of upper respiratory tract
(nose and throat).
FIRST AID: REMOVE TO FRESH AIR.
IF EFFECTS OCCUR, CONSULT A PHYSICIAN.
NOTE TO PHYSICIAN: NO SPECIFIC ANTIDOTE.
SUPPORTIVE CARE. TREATMENT BASED ON
JUDGEMENT OF THE PHYSICIAN IN RESPONSE TO
THE REACTION OF THE PATIENT. CONSULT DOW CHEMICAL
24 HOUR EMERGENCY 1-989-636-4400.