Zinc O,O-bisisodecyl dithiophosphate

  • Zinc isodecyl phosphorodithioate
  • Zinc O,O-diisodecyl dithiophosphate
Formula
(C20H43O2PS2)2.Zn
Structure
Description
Straw yellow. Sweet odor.
Uses
Industrial gear oils and greases.

Registry Numbers and Inventories.
CAS
25103-54-2
EC (EINECS/ELINCS)
246-618-6
Beilstein/Gmelin
NA
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C20H43O2PS2.1/2Zn
Formula mass
886.72
Density
1.06 g/cm3 (15 C)
Solubility in water
practically insoluble

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear protective goggles and clothing.
Respirators
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Small spills/leaks
Evacuate area and ventilate. Wear protective equipment. If required, use an inert absrobent. Sweep up and place in an appropriate container for disposal. Wash contaminated surfaces.
Stability
Can be heated to 110 F (43 C) for unloading and transfer, but store for extended periods at 100 F (30 C) or below.
Incompatibilities
Chemically incompatible with bromine, chlorine, chromic acid and hydrogen peroxide.

Fire.
Fire fighting
Extinguishing media: Carbon dioxide, dry chemical or foam. Evacuate areas down wind from fire. Use self-contained breathing apparatus.

Health.
Exposure limit(s)
OSHA: PEL (8 h TWA): 5 mg/m3.
Exposure effects
   Ingestion
Nausea, vomiting and diarrhea are possible if ingested.
   Inhalation
Cough, tachypnea, and wheezing are common after inhalation.
   Skin
Redness, swelling and pain may occur.

First aid
 
   Ingestion
Emesis is not indicated due to the irritant nature of these agents. Charcoal - not recommended; it may promote vomiting and make endoscopic evaluation difficult. Immediately dilute with 4 to 8 ounces (120 to 240 ml) of milk or water (not to exceed 4 ounces/120 ml in a child). Neutralization - neutralization is not indicated. Although these agents are irritants, and therefore should not produce tissue damage, it is almost impossible to assure that a particular substance under a particular set of circumstances would not cause damage. Therefore, each patient should be examined with the idea that mucous membrane damage might have occurred.
   Inhalation
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
   Skin
Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility. If in a medical facility, sterile saline should be used to irrigate the eyes until the cul de sac is returned to neutrality. Some alkali exposures may require prolonged irrigation.

Transport.
IMO Pollution Category
B