Agent Name

2,5-Dimercapto-1,3,4-thiadiazole

CAS Number

1072-71-5

Formula

C2-H2-N2-S3

Major Category

Other Classes

Synonyms

1,3,4-Thiadiazol-dithiol-(2,5) [German]; 1,3,4-Thiadiazole-2,5-dithiol; 1,3,4-Thiadiazolidine-2,5-dithione; 2,5-Dimercapto-1,3,4-thiodiazole; 2,5-Dimercaptothiadiazole; Bismuthiol I; Dimercaptothiadiazole; PY 61H; [ChemIDplus] DMcT; Bismuthiol; D 2; DMTD; Vanchem DMTD; [NTP]

Category

Sulfur Compounds

Description

Slightly yellow solid with an irritating odor; [NTP] Yellow powder with a stench; [Alfa Aesar MSDS]

Sources/Uses

Used in flame and scorch retardant products, to make polymers, heavy metal salts, basic salts, pharmaceuticals, and dyes, in cross linking halogenated polymers, electrode compositions, photography, as an additive in lubricating oils and greases, corrosion inhibitor (for metals, metal coatings, and paints), chelating agent in metal analysis, adhesion improver, biocide, and for purifying and treating wastewater; [NTP]

Comments

A severe eye irritant; [RTECS] An irritant that can cause chemical conjunctivitis; Report of 7 cases of allergic sensitization from a manufacturing plant; A derivative (CUVAN 826) is a contact sensitizer in guinea pigs; [NTP] An irritant that may cause serious eye injury; Harmful by ingestion; Oral LD50 (rat) = 1,616 mg/kg; [Alfa Aesar MSDS]

Reference Link

Contact allergy to 2,5-dimercapto-1,3,4-thiadiazole and phenyl-alpha-naphtylamine, allergens in industrial greases and lubricant oils--contact allergy to water-insoluble greases is uncommon but needs to be considered in some workers.

Exposure Assessment
Lethal Concentration

LC50 (rat) = 3,090 mg/m3

Adverse Effects
Skin Sensitizer

Yes

Links to Other NLM Databases
Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: