MSDS For Gomori Trichrome Stain
(Wheately's Modification)
Catalog # 602A
Medical chemical Corp.
19430 Van Ness Ave.
Torrance, CA 90501
Customer Service: Phone (310)787-6800
FAX (310)787-4464
CHEMTREC Emergency Response Telephone Number: (800)424-9300
Note: The CHEMTREC phone number is only for emergencies involving spills, leaks, fire, exposure or accident. Please
direct all other inquiries to our customer service phone number.
Section 1 - Product Identification
An aqueous solution of chromotrope 2R, acetic acid, light green SF, fast green FCF and phosphotungstic acid.
Section II - Composition/Information on Components
Ingredients CAS# OSHA Pel ACGIH TLV %
3 3
acetic acid 64-19-7 25 mg/m (TWA) 25 mg/m (TWA) 1% v/v
1 mg/m3 (TWA) (as W) 3 mg/m3 (STEL) (as W)
phosphotungstic acid 12067-99-1 0.6% w/v
chromotrope 2R 4197-07-3 ------- ------- 0.6% w/v
fast green FCF 2353-45-9 ------- ------- 0.3% w/v
Section III - Hazards Identification
Overview: May be harmful if swallowed. May be irritating to skin eyes and respiratory tract.
Safety Ratings
Health: Slight Flammability: None Reactivity: Slight Contact: Slight
Recommended safety equipment: safety goggles, lab coat and proper gloves
Storage: General storage
NFPA Ratings
Health = 1 Flammability = 0 Reactivity = 1
Potential Health Effects
The toxicology of this compound have not been completely examined. It is presumed that the toxicity of this item is
similar to other azo and triphenylmethane dyes.
Inhalation: May be irritating
Ingestion: While the toxicity of this compound is low, large doses may cause nausea, vomiting, diarrhea, etc.
Skin contact: Not normally a problem
Eye contact: May be irritating
Chronic Exposure: Unknown
Aggravation of preexisting conditions: Unknown
Section IV - First Aid Measures
Inhalation: Unlikely to be a problem. Remove from source of exposure and get medical attention for any breathing
difficulty.
MSDS for Gomori Trichrome Stain, page 1 of 3
Ingestion: If the victim is conscious, induce vomiting. Never give anything by mouth to an unconscious person.
Skin Contact: Wash affected area with soap and water. Get medical advice if irritation develops.
Eye Contact: Rinse thoroughly with running water. Get medical advice if irritation develops.
Section V - Fire Fighting Measures
Fire: Not normally a fire Hazard,
Explosion: Not Normally an explosion hazards.
Fire Extinguishing Media: Any means suitable for surrounding fire.
Special information: Pyrolysis will release corrosive oxides.
Section VI - Accidental Release Measures
Absorb with a suitable absorbent (such as paper towels) and store in a suitable container for disposal. Waste disposal
is usually not restricted but local ordinances vary. Insure compliance with all government regulations.
Section VII - Handling and Storage
Store in a closed container, protected from freezing.
Section VIII - Exposure Control/Personal Protection
Airborne Exposure Limits: See section II
Ventilation System: Usually not required. When required, Refer to the ACGIH document, "Industrial Ventilation, a
Manual of Recommended Practices" for details about ventilation.
Personal Respirator: Usually not required. In case of emergency, or when exposure levels are unknown, use a positive
pressure, full face piece, air supplied respirator.
Skin protection: Protective gloves are not required but recommended as part of good laboratory practice.
Eye Protection: Laboratory safety goggles or similar products are not required but recommended as part of good
laboratory practice.
Section IX - Physical and Chemical Properties
Boiling Point: 100oC Density: About 1.0 g/ml
Vapor pressure (mm Hg): 18 @ 20oC Evaporation Rate (water = 1): 1
Vapor Density (air = 1): 0.6 Solubility: Infinitely miscible with water
Appearance and Odor: An opaque purple solution with the characteristic odor of acetic acid.
Section X - Stability and Reactivity
Stability: Freezes at low temperature.
Hazardous Decomposition Products: Nothing unusual.
Hazardous polymerization: Will not occur.
Incompatibilities: Nothing unusual.
Conditions to avoid: Excessive cold/heat and light.
Section XI - Toxicological Information
None relating to normal exposure.
MSDS for Gomori Trichrome Stain, page 2 of 3
Cancer lists
Ingredient Known Carcinogenicity? NTP? Anticipated? IARC Category
acetic acid no no no none
phosphotungstic acid no no no none
chromotrope 2R no no no none
fast green FCF no no no none
Section XII - Ecological Information
Environmental Fate: Biodegradable
Environmental Toxicity: None
Section XIII - Disposal
Usually not restricted. However, local governments have wide latitude to restrict the amounts of anything that may be
flushed down the drain. Insure compliance with all government regulations.
Section XIV - Transportation information
Not Regulated
Section XV - Regulatory Information
Chemical Inventory Status
Ingredient TSCA EC
acetic acid Yes Yes
phosphotungstic acid Yes Yes
chromotrope 2R Yes Yes
fast green FCF Yes Yes
Federal, State and International Regulations
SARA 302 SARA 313 RCRA TSCA
Ingredient RQ TPQ List Category 261.33 8(D)
acetic acid No No No No No No
phosphotungstic acid No No No No No No
chromotrope 2R No No No No No No
fast green FCF No No No No No No
Chemical Weapons Convention: No TSCA 12(b): No CDTA: No
SARA 311/312: Acute: Yes, Chronic: No, Flammable: No
Section XVI - Other Information
This information is believed to be correct but is not waranteed as such, nor does it purport to be all inclusive.
Prepared by: P. B. Revision Date: Mar. 9, 2006
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