Agent Name

Molybdenum disulfide

CAS Number

1317-33-5

Formula

Mo-S2

Major Category

Metals

Synonyms

C.I. 77770; C.I. Pigment Black 34; DAG 206; DAG 325; DAG-V 657; DM 1; DM 1 (sulfide); LM 13; LM 13 (lubricant); Liqui-Moly LM 11; Liqui-Moly LM 2; M 5; M 5 (lubricant); MD 40; MD 40 (lubricant); Moly Powder B; Moly Powder C; Moly Powder PA; Moly Powder PS; Molybdenum bisulfide; Molybdenum sulfide (MoS2); Molybdenum(IV) sulfide; Molycolloid CF 626; Molyke R; Molykote; Molykote Microsize Powder; Molykote Z; Molysulfide; Mopol M; Mopol S; Motimol; Natural molybdenite; Nichimoly C; Pigment Black 34; Solvest 390A; Sumipowder PA; T-Powder; [ChemIDplus]

Category

Metals, Inorganic Compounds

Description

Lustrous lead-grey powder; Black and lustrous when artificially prepared; Insoluble in water; [Merck Index] Black odorless powder; Insoluble in water; [MSDSonline]

Sources/Uses

Naturally occurs as the mineral molybdenite (main source of molybdenum); [Merck Index] Used as a lubricant in greases, oil dispersions, resin bonded films, and dry powders (especially at extreme pressures and high vacuum); Also used as a hydrogenation catalyst and in microprobe analysis of soil erosion aerosols; [HSDB]

Comments

An irritant; [MSDSonline] See "Molybdenum."

Exposure Assessment
TLV (ACGIH)

10 mg/m3, as Mo, inhal. fraction, 3 mg/m3, as Mo, respir. fraction (metal and insol. compds)

PEL (OSHA)

15 mg/m3, as Mo, total dust (metal and insol. compds.)

Lethal Concentration

LC50 (rat) > 2,820 mg/m3/4h

Links to Other NLM Databases
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Processes

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