Molybdenum disulfide manufacturers and suppliers

Molybdenum disulfide suppliers

Properties

Melting point:: 2375 °C

Density: 5.06 g/mL at 25 °C(lit.)

solubility: insoluble in H2O; soluble in concentrated acid solutions

form: powder

color: Gray to dark gray or black

Specific Gravity: 4.8

Odor: odorless

Water Solubility: Soluble in hot sulfuric acid, and aquaregia. Insoluble in water, concentrated sulfuric acid and dilute acid.

Crystal Structure: MoS2 type

crystal system: Six sides

Merck: 14,6236

Boiling point:: 100°C (water)

Space group: P63/mmc

Lattice constant

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.3161	0.3161	1.2295	90	90	120	0.1064

Exposure limits: ACGIH: TWA 10 mg/m3; TWA 3 mg/m3
NIOSH: IDLH 5000 mg/m3

Stability:: Stable. Incompatible with oxidizing agents, acids.

InChIKey: CWQXQMHSOZUFJS-UHFFFAOYSA-N

CAS DataBase Reference: 1317-33-5(CAS DataBase Reference)

EPA Substance Registry System: Molybdenum sulfide (MoS2) (1317-33-5)

Electronic properties: 2D Semiconductor

Bandgap: 1.23 eV

Safety Information

Symbol(GHS): GHS07

Signal word: Warning

Hazard statements: H315-H319-H335

Precautionary statements: P261-P280a-P304+P340-P305+P351+P338-P405-P501a

Safety Statements: 22-24/25

WGK Germany: -

RTECS: QA4697000

TSCA: Yes

HS Code: 28309090

Hazardous Substances Data: 1317-33-5(Hazardous Substances Data)

Toxicity: LC50 inhalation in rat: > 2820mg/m3/4H

Use

Molybdenum disulfide (MoS2) is one of the most widely used lubricants in space systems.it is a common additive that improves the antiseize properties of wheel bearing grease.Molybdenum disulfide (MoS2) has been used for many years as a solid lubricant because of its interesting friction-reducing properties related to its crystalline structure. MoS2 is a lamellar compound made of a stacking of S-Mo-S layers . In each of them, the molybdenum atom is surrounded by six sulfur atoms located at the top of a trigonal prism. The distance between a molybdenum atom and a sulfur atom is equal to 0.241 nm, whereas the distance between two sulfur atoms from two adjacent layers is equal to 0.349 nm. This characteristic was often used to explain easy cleavage between the layers and therefore the lubricating properties of MoS2.

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