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HomeProduct name listSodium mercaptobenzothiazole

Sodium mercaptobenzothiazole

  • CAS NO.:2492-26-4
  • Empirical Formula: C7H4NNaS2
  • Molecular Weight: 189.23
  • MDL number: MFCD00065334
  • EINECS: 219-660-8
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-11-04 20:04:50
Sodium mercaptobenzothiazole  Structural

What is Sodium mercaptobenzothiazole ?

The Uses of Sodium mercaptobenzothiazole

sodium mercaptobenzothiazole solution, also known as sodium mbt50%, or simply mbt50, is a clear, amber 50% aqueous solution of sodium 2-mercaptobenzothiazole represented by the formula: (nac7h4ns2). mbt50 is used as a corrosion inhibitor and water treatment agent; biological activity indicates possible use as a bactericide or fungicide. it is also used as a chemical intermediate.

The Uses of Sodium mercaptobenzothiazole

copper corrosion inhibitor; plasticizer and photometer for acid copper plating.

General Description

Sodium 2-mercaptobenzothiazol solution appears as an amber liquid with an odor of old rubber. A 50% aqueous solution. Denser than water. (USCG, 1999)

Air & Water Reactions

Sensitive to prolonged exposure to air. Water soluble.

Reactivity Profile

SODIUM 2-MERCAPTOBENZOTHIAZOL reacts vigorously with oxidizing materials (e.g. hydroperoxides). Liberates heat in contact with strong mineral acids or acid fumes .

Health Hazard

Contact with moisture in the body by inhalation may yield sodium hydroxide (corrosive) and 2-mercaptabenzothiazole, an irritant. Contact with the eyes caused opacity or ulceration of the cornea, inflammation of the iris, redness and swelling of the conjunctiva and partial eversion of the eye lids, and destruction or irreversible tissue change in 24 hours or less (rabbit). A dose of 2,500 mg/kg applied to the skin caused severe depression, cold extremities, appetite loss; 4 of 10 died. Exposure of the skin to 1,250 mg/kg caused a severe degree of skin injury. The skin was burned in 24 hours with formation of hard eschar at 1-2 weeks; 1 of 10 rabbits died. Ingestion caused tremors, convulsions, severe depression and hemaluria in male rats. Ingestion of 312.5 mg/kg: 1 of 5 male rats die on day 2; 625 mg/kg: 2 of 5 died within 3-5 minutes; 1,250 mg/kg: 3 of 5 died within 3-5 minutes; 2,500 mg/kg: 100% mortality within 3-5 minutes. Hemorrhage of the stomach occurred in all rats that died.

Contact allergens

Such mercaptobenzothiazole hydrosoluble salts are used as antioxidants and biocides in cutting fluids and greases, paints, or glues.

Safety Profile

Moderately toxic by ingestion. When heated to decomposition it emits very toxic fumes of NOx, SOx, and NazO. See also MERCAPTANS.

Regulations

Sodium 2-mercaptobenzothiazole was first registered as a pesticide in the United States in 1949 in an industrial preservative product. Currently, only one product is registered, for use in wood and paper/paperboard treatment and as a preservative in metal working cutting fluids, emulsions, textiles and pastes.
sodium and zinc salts of 2-mercaptobenzothiazole

Properties of Sodium mercaptobenzothiazole

Melting point: -6 °C
Boiling point: 103 °C
Density  1,255 g/cm3
vapor pressure  0Pa at 25℃
storage temp.  under inert gas (nitrogen or Argon) at 2-8°C
form  liquid
color  White to Orange to Green
Water Solubility  >=10 g/100 mL at 20 ºC
CAS DataBase Reference 2492-26-4(CAS DataBase Reference)
EPA Substance Registry System Sodium mercaptobenzothiazole (2492-26-4)

Safety information for Sodium mercaptobenzothiazole

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H315:Skin corrosion/irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P271:Use only outdoors or in a well-ventilated area.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P312:Call a POISON CENTER or doctor/physician if you feel unwell.
P321:Specific treatment (see … on this label).
P362:Take off contaminated clothing and wash before reuse.
P302+P352:IF ON SKIN: wash with plenty of soap and water.
P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P332+P313:IF SKIN irritation occurs: Get medical advice/attention.
P405:Store locked up.
P403+P233:Store in a well-ventilated place. Keep container tightly closed.
P501:Dispose of contents/container to..…

Computed Descriptors for Sodium mercaptobenzothiazole

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