Agent Name

Zinc O,O-diisooctyl dithiophosphate

CAS Number

28629-66-5

Formula

C32-H68-O4-P2-S4-Zn

Major Category

Other Uses

Synonyms

Dithiophosphoric acid, O,O'-diisooctyl ester, zinc salt; Isooctyl ZDDP; Oronite; Phosphorodithioic acid, O,O-diisooctyl ester, zinc salt; Zinc bis(O,O-diisooctyl dithiophosphate); Zinc bis(diisooctyl dithiophosphate); Zinc diisoctyl dithiophosphate; Zinc diisooctyl dithiophosphate; Zinc bis(O,O-diisooctyl) bis(dithiophosphate); Zinc, bis(O,O-diisooctyl phosphorodithioato-S,S')-; Zinc, bis(O,O-diisooctyl phosphorodithioato-kappaS,kappaS')-; [ChemIDplus]

Category

Lubricants

Description

Pale yellow liquid; [HSDB]

Sources/Uses

Used in hydraulic and transmission fluids, lubricating oils, extreme pressure lubricants, and anti-wear detergents; [HSDB]

Comments

A respiratory tract irritant; Oral LD50 (rat) = 3,100 mg/kg; Zinc O,O-Diisoalkyl Dithiophosphates: Severely irritating to skin and eyes; Caused severe skin and eye irritation and corneal injury in rabbits; [HSDB] A skin and eye irritant, based on animal studies; Notable effects of repeated dermal doses in animal studies include edema, fissuring, and exfoliation of skin, and changes to male reproductive organs (aspermatogenesis, tubular hypoplasia, and testicular atrophy); [IUCLID] Repeated dermal exposure of rabbits causes moderate male reproductive toxicity; [EPA Risk-Based Prioritization Document]

Exposure Assessment
Lethal Concentration

LC50 (rat) > 520 mg/m3/6h

Adverse Effects
Reproductive Toxin

Yes

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Other Information

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