Material Safety Data Sheet
2-Mercaptobenzothiazole, 99% (Titr.)

ACC# 99747
Section 1 - Chemical Product and Company Identification
MSDS Name: 2-Mercaptobenzothiazole, 99% (Titr.)
Catalog Numbers: AC401950000, AC401950250, AC401951000
Company Identification:

              Acros Organics N.V.
              One Reagent Lane
              Fair Lawn, NJ 07410
For information in North America, call: 800-ACROS-01
For emergencies in the US, call CHEMTREC: 800-424-9300

Section 2 - Composition, Information on Ingredients

CAS# Chemical Name Percent EINECS/ELINCS
149-30-42-Mercaptobenzothiazole 98.0 205-736-8

Section 3 - Hazards Identification


Appearance: yellow.
Warning! Harmful if swallowed. Skin sensitizer. Stench. Causes eye irritation. May cause respiratory and digestive tract irritation. May cause skin irritation.
Target Organs: None.

Potential Health Effects
Eye: Causes eye irritation.
Skin: May cause skin irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
Ingestion: Harmful if swallowed. May cause irritation of the digestive tract. Mercaptans may cause nausea and headache. Exposure to high concentrations of mercaptans can produce unconsciousness with cyanosis (bluish discoloration of skin due to deficient oxygenation of the blood), cold extremities and rapid pulse.
Inhalation: May cause respiratory tract irritation. Exposure to high concentrations of mercaptans can produce unconsciousness with cyanosis (bluish discoloration of skin due to deficient oxygenation of the blood), cold extremities and rapid pulse. Mercaptans may cause nausea and headache.
Chronic: Repeated exposure may cause sensitization dermatitis.

Section 4 - First Aid Measures

Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid. Do NOT allow vi ctim to rub eyes or keep eyes closed.
Skin: Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Ingestion: Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation: Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. Do NOT use mouth-to-mouth resuscitation.
Notes to Physician: Treat symptomatically and supportively.

Section 5 - Fire Fighting Measures

General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas.
Extinguishing Media: Use agent most appropriate to extinguish fire. Use water spray, dry chemical, carbon dioxide, or appropriate foam.
Flash Point: 243 deg C ( 469.40 deg F)
Autoignition Temperature: 465 deg C ( 869.00 deg F)
Explosion Limits, Lower:15.00 vol %
Upper: .00 vol %
NFPA Rating: (estimated) Health: 2; Flammability: 1; Instability: 0

Section 6 - Accidental Release Measures

General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks: Clean up spills immediately, observing precautions in the Protective Equipment section. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Section 7 - Handling and Storage

Handling: Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Storage: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Section 8 - Exposure Controls, Personal Protection

Engineering Controls: Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits
Chemical Name ACGIH NIOSH OSHA - Final PELs
2-Mercaptobenzothiazole none listed none listed none listed

OSHA Vacated PELs: 2-Mercaptobenzothiazole: No OSHA Vacated PELs are listed for this chemical.
Personal Protective Equipment
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin: Wear appropriate protective gloves to prevent skin exposure.
Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators: Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - Physical and Chemical Properties

Physical State: Needles
Appearance: yellow
Odor: stench
pH: Not available.
Vapor Pressure: Not available.
Vapor Density: 5.8
Evaporation Rate:Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point:179 deg C
Decomposition Temperature:Not available.
Solubility: insoluble
Specific Gravity/Density:1.4200g/cm3
Molecular Formula:C7H5NS2
Molecular Weight:167.26

Section 10 - Stability and Reactivity

Chemical Stability: Stable under normal temperatures and pressures.
Conditions to Avoid: Incompatible materials, dust generation, excess heat.
Incompatibilities with Other Materials: Oxidizing agents.
Hazardous Decomposition Products: Nitrogen oxides, carbon monoxide, oxides of sulfur, irritating and toxic fumes and gases, carbon dioxide, nitrogen.
Hazardous Polymerization: Has not been reported.

Section 11 - Toxicological Information

CAS# 149-30-4: DL6475000
CAS# 149-30-4:
     Inhalation, rat: LC50 = >1270 mg/m3;
     Oral, mouse: LD50 = 1158 mg/kg;
     Oral, rat: LD50 = 100 mg/kg;
     Skin, rabbit: LD50 = >7940 mg/kg;
CAS# 149-30-4: Not listed by ACGIH, IARC, NTP, or CA Prop 65.

Epidemiology: No information available.
Teratogenicity: No information available.
Reproductive Effects: No information available.
Mutagenicity: No information available.
Neurotoxicity: No information available.
Other Studies:

Section 12 - Ecological Information

Ecotoxicity: Fish: Goldfish: LC50 = 2 mg/L; 48 Hr.; Unspecified No data available.
Environmental: 2-Mercaptobenzothiazole has a low to moderate mobility in soil, so if released on land it may leach. Leaching is more likely to occur in alkaline soil. While 2-mercaptobenzothiazole is considered difficult to biodegrade, biodegradation may occur when low concns of the chemical are released to acclimated soil. The half-lives of 2-mercaptobenzothiazole in three standard soils ranged from 92 to 248 days. If released in water, 2-mercaptobenzothiazole would be partially dissociated and may partially adsorb to sediment.
Physical: If released into the atmosphere, 2-mercaptobenzothiazole would be in the form of an aerosol and be removed by gravitational settling. Vapor-phase 2-mercaptobenzothiazole will react with chemically-produced hydroxyl radicals resulting in an estimated atmospheric half-life of 8.4 hr.
Other: No information available.

Section 13 - Disposal Considerations

Chemical waste generators must determine whether a discarded chemical is classified as a hazardous waste. US EPA guidelines for the classification determination are listed in 40 CFR Parts 261.3. Additionally, waste generators must consult state and local hazardous waste regulations to ensure complete and accurate classification.
RCRA P-Series: None listed.
RCRA U-Series: None listed.

Section 14 - Transport Information

Shipping Name: TOXIC SOLIDS, ORGANIC, N.O.S. No information available.
Hazard Class: 6.1
UN Number: UN2811
Packing Group: III

Section 15 - Regulatory Information


     CAS# 149-30-4 is listed on the TSCA inventory.
Health & Safety Reporting List
     CAS# 149-30-4: Effective 12/28/84, Sunset 12/28/94
Chemical Test Rules
     None of the chemicals in this product are under a Chemical Test Rule.
Section 12b
     None of the chemicals are listed under TSCA Section 12b.
TSCA Significant New Use Rule
     None of the chemicals in this material have a SNUR under TSCA.
CERCLA Hazardous Substances and corresponding RQs
     None of the chemicals in this material have an RQ.
SARA Section 302 Extremely Hazardous Substances
     None of the chemicals in this product have a TPQ.
SARA Codes
     CAS # 149-30-4: acute.
Section 313
     This material contains 2-Mercaptobenzothiazole (CAS# 149-30-4, 98.0%),which is subject to the reporting requirements of Section 313 of SARA Title III and 40
Clean Air Act:
     This material does not contain any hazardous air pollutants.
     This material does not contain any Class 1 Ozone depletors.
     This material does not contain any Class 2 Ozone depletors.
Clean Water Act:
     None of the chemicals in this product are listed as Hazardous Substances under the CWA.
     None of the chemicals in this product are listed as Priority Pollutants under the CWA.
     None of the chemicals in this product are listed as Toxic Pollutants under the CWA.
     None of the chemicals in this product are considered highly hazardous by OSHA.
     CAS# 149-30-4 is not present on state lists from CA, PA, MN, MA, FL, or NJ.

California Prop 65

California No Significant Risk Level: None of the chemicals in this product are listed.

European/International Regulations

European Labeling in Accordance with EC Directives
Hazard Symbols:
     XI N
Risk Phrases:

     R 36 Irritating to eyes.
     R 43 May cause sensitization by skin contact.
     R 50/53 Very toxic to aquatic organisms, may cause long-term
     adverse effects in the aquatic environment.

Safety Phrases:

     S 24 Avoid contact with skin.
     S 37 Wear suitable gloves.
     S 45 In case of accident or if you feel unwell, seek medical advice
     immediately (show the label where possible).
     S 60 This material and its container must be disposed of as
     hazardous waste.
     S 28A After contact with skin, wash immediately with plenty of
     S 61 Avoid release to the environment. Refer to special
     instructions/safety data sheets.

WGK (Water Danger/Protection)

     CAS# 149-30-4: 2
Canada - DSL/NDSL
     CAS# 149-30-4 is listed on Canada's DSL List.
Canada - WHMIS
     WHMIS: Not available.
Canadian Ingredient Disclosure List

Section 16 - Additional Information

MSDS Creation Date: 6/24/1999
Revision #2 Date: 3/18/2003

The information above is believed to be accurate and represents the best information currently available to us. However, we make no warranty of merchantability or any other warranty, express or implied, with respect to such information, and we assume no liability resulting from its use. Users should make their own investigations to determine the suitability of the information for their particular purposes. In no event shall Fisher be liable for any claims, losses, or damages of any third party or for lost profits or any special, indirect, incidental, consequential or exemplary damages, howsoever arising, even if Fisher has been advised of the possibility of such damages.