Section 1 - CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

PRODUCT NAME

ZINC DIALKYL DITHIOPHOSPHATE

NFPA

PRODUCT USE

A lube oil additive for corrosion resistance, wear resistance, antioxidant

SYNONYMS

"phosphorodithoic acid dialkyl ester zinc salt", "CAS RN 68649-42-3 as", "CAS RN 68649-42-
3 as", "phosphorodithoic acid O, O-di-C1-14-alkyl esters, zinc salts", "phosphorodithoic
acid O, O-di-C1-14-alkyl esters, zinc salts", ZDDP, "dialkyl dithio phosphate", "zinc
dialkyldithiophosphate", "CAS RN 68457-79-4 as", "CAS RN 68457-79-4 as",
"phosphorodithioic acid mixed with O, O-bis(iso-butyl and pentyl) esters, ",
"phosphorodithioic acid mixed with O, O-bis(iso-butyl and pentyl) esters, ", "zinc salts",
"CAS RN 26566-95-0 as", "CAS RN 26566-95-0 as", "phosphorodithioic acid, O-(2-
ethylhexyl) O-(2-methyl propyl) esters, ", "phosphorodithioic acid, O-(2-ethylhexyl) O-
(2-methyl propyl) esters, ", "zinc salt", "CAS RN 7491-65-8 as", "CAS RN 7491-65-8 as",
"phosphorodithioic acid, O, O-bis(1, 2, 2-trimethylpropyl) ester, zinc salt",
"phosphorodithioic acid, O, O-bis(1, 2, 2-trimethylpropyl) ester, zinc salt", "CAS RN
4563-55-7 as", "CAS RN 4563-55-7 as", "phosphorodithioic acid, O, O-bis(2-methylpropyl)
ester, zinc salt", "phosphorodithioic acid, O, O-bis(2-methylpropyl) ester, zinc salt",
"C8-H19-O2-P-S2. 1/2Zn", "C8-H19-O2-P-S2. 1/2Zn", "Paranox 15"

Section 2 - HAZARDS IDENTIFICATION

CANADIAN WHMIS SYMBOLS

EMERGENCY OVERVIEW

RISK

Risk of serious damage to eyes.
Very toxic to aquatic organisms, may cause long- term adverse effects in the
aquatic environment.

POTENTIAL HEALTH EFFECTS

ACUTE HEALTH EFFECTS

SWALLOWED

  Accidental ingestion of the material may be damaging to the health of the individual.  Thiophosphates (phosphothioate esters) do not generally produce significant cholinesterase inhibition although they may react with a range of compounds to produce such inhibitors. Ingestion of large quantities may produce severe abdominal pains, thirst,  acidaemia, difficult breathing, convulsions, collapse, shock and even death.  

EYE

  If applied to the eyes, this material causes severe eye damage.  Exposure to H2S may produce pain, blurred vision, and irritation. These symptoms are temporary in all but severe cases. Eye irritation may produce conjunctivitis, photophobia,  pain, and at higher concentrations blurred vision and corneal blistering.  

SKIN

  Skin contact with the material may damage the health of the individual; systemic effects may result following absorption.  Open cuts, abraded or irritated skin should not be exposed to this material.  Entry into the blood-stream, through, for example, cuts, abrasions or lesions, may produce systemic injury with harmful effects. Examine the skin prior to the use of the material and ensure that any external damage is suitably protected.  This material can cause inflammation of the skin oncontact in some persons.  

INHALED

  Inhalation may produce health damage*.  The material is not thought to produce respiratory irritation (as classified using animal models). Nevertheless inhalation of dusts, or fume, especially for prolonged periods, may produce respiratory discomfort and occasionally, distress.  Inhalation hazard is increased at higher temperatures.  Persons with impaired respiratory function, airway diseases and conditions such as emphysema or chronic bronchitis, may incur further disability if excessive concentrations of particulate are inhaled.  Hydrogen sulfide poisoning can cause increased secretion of saliva, nausea, vomiting, diarrhea, giddiness, headache, vertigo, memory loss, palpitations, heartbeat irregularities, weakness, muscle cramps, confusion, sudden collapse, unconsciousness and death due to paralysis of breathing (at levels above 300 parts per million). The "rotten egg" odor is not a good indicator of exposure since odor fatigue occurs and odor is lost at over 200 ppm. The gas can enter the body through a punctured ear drum and even wearing some respiratory protection. Immediate supportive care is essential. Ensure medical help is addressed as part of the site emergency plan and that employees who may be accidentally exposed are made aware of the existence of such a plan.  Inhalation of aerosols (mists, fumes), generated by the material during the course of normal handling, may be damaging to the health of the individual.  Organic phosphates are very stable and highly hazardous. There are a number of effects they can have on the body, including excitement of the central nervous system, and irritation of the skin and respiratory tract. Alkyl phosphates do not cause nerve damage, but they do excite the nervous system and irritate the respiratory tract, eye and skin, and can be absorbed through the skin.  

CHRONIC HEALTH EFFECTS

  Limited evidence suggests that repeated or long-term occupational exposure may produce cumulative health effects involving organs or biochemical systems.  Long term exposure to high dust concentrations may cause changes in lung function i.e. pneumoconiosis; caused by particles less than 0.5 micron penetrating and remaining in the lung. Prime symptom is breathlessness; lung shadows show on X-ray.  Long term low level exposure to hydrogen sulfide may produce headache, fatigue, dizziness,  irritability and loss of sexual desire. These symptoms may also result when exposed to hydrogen sulfide at high concentration for a short period of time.