CompoundList
Sign in
Pharmaceutical excipients

Thimerosal safety data

GHS hazards, precautions, first aid, handling and transport for Thimerosal. A classification summary, not a safety data sheet.
CAS 54-64-8Formula C9H9HgNaO2S

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

GHS classification

Pictograms, signal word and hazard classes of the GHS classification

GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment
Signal word
Danger

Hazard classes and categories

  • Acute Tox. 1/2 (oral) + Acute Tox. 1/2 (dermal) + Acute Tox. 1/2 (inhalation)
  • Acute Tox. 1/2 (oral)
  • Acute Tox. 3 (oral)
  • Acute Tox. 1/2 (dermal)
  • Acute Tox. 1/2 (inhalation)
  • Repr. 1A/1B
  • STOT RE 1
  • STOT RE 2
  • Aquatic Acute 1
  • Aquatic Chronic 1

Hazard statements

H codes grouped by type. Percentages show the share of classification notifications that report the statement

Health hazards

  • H300 + H310 + H330Fatal if swallowed. Fatal in contact with skin. Fatal if inhaled.
  • H300Fatal if swallowed.
  • H301Toxic if swallowed.
  • H310Fatal in contact with skin.
  • H330Fatal if inhaled.
  • H360May damage fertility or the unborn child.
  • H372Causes damage to organs through prolonged or repeated exposure.
  • H373May cause damage to organs through prolonged or repeated exposure.

Environmental hazards

  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.

Precautionary statements

P codes for prevention, response, storage and disposal

Prevention

  • P203Obtain, read and follow all safety instructions before use.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P284In case of inadequate ventilation wear respiratory protection.

Response

  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P316Get emergency medical help immediately.
  • P318If exposed or concerned, get medical advice.
  • P319Get medical help if you feel unwell.
  • P320Specific treatment is urgent (see supplemental first aid instructions on the label).
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P391Collect spillage.

Storage

  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.

Disposal

  • P501Dispose of contents and container in accordance with local regulations.

First aid

General first aid measures. Get medical advice if you feel unwell

If inhaled
IMMEDIATELY leave the contaminated area, take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used, if not available, use a level of protection greater than or equal to that advised under Protective Clothing.
Skin contact
IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
Eye contact
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.
If swallowed
Some heavy metals are VERY TOXIC POISONS, especially if their salts are very soluble in water (e.g., lead, chromium, mercury, bismuth, osmium, and arsenic). IMMEDIATELY call a hospital or poison control center and locate activated charcoal, egg whites, or milk in case the medical advisor recommends administering one of them. Also locate Ipecac syrup or a glass of salt water in case the medical advisor recommends inducing vomiting. Usually, this is NOT RECOMMENDED outside of a physician's care. If advice from a physician is not readily available and the victim is conscious and not convulsing, give the victim a glass of activated charcoal slurry in water or, if this is not available, a glass…

Handling, storage and disposal

Summaries only, follow the supplier SDS for your grade

Safe handling

RECOMMENDED RESPIRATOR: Where the neat test chemical is weighed and diluted, wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter.

Exposure limits and toxicity

Occupational exposure limits and toxicity data

ACGIH TLV
8 hr Time Weighted Avg (TWA): 0.01 mg/cu m, 15 min Short Term Exposure Limit (STEL): 0.03 mg/cu m. Skin. /Mercury alkyl compounds, as Hg/
IDLH
2 mg/cu m (as Hg) /Mercury (organo) alkyl compounds (as Hg)/

SYMPTOMS: Symptoms of exposure to this class of compounds includes aphthous stomatitis, catarrhal gingivitis, nausea, liquid stools, pain, liver disorder, injury to the cardiovascular system and hematopoietic system, deafness and ataxia. Exposure may be fatal. Headache, paresthesia of the tongue, lips, fingers and toes, other non-specific dysfunctions, metallic taste, slight gastrointestinal disturbances, excessive flatus and diarrhea may occur. Acute poisoning may cause gastrointestinal irritation and renal failure.

Transport information

UN dangerous goods classification for road, sea and air

UN number
UN 2025

Shipping rules depend on mode, quantity and packaging. Confirm the classification with the supplier SDS and your freight forwarder.

Supplier safety data sheets

SDS documents uploaded by suppliers who list this chemical

No supplier has uploaded an SDS for Thimerosal yet. Suppliers usually send one with their quote. Request quotes

Safety questions

Quick answers about handling Thimerosal safely

Is Thimerosal hazardous?

Thimerosal carries the GHS signal word "Danger". Main hazards: fatal if swallowed. fatal in contact with skin. fatal if inhaled, fatal if swallowed, toxic if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

Which GHS pictograms apply to Thimerosal?

The GHS classification of Thimerosal shows 3 pictograms: GHS06 (acute toxicity (severe)), GHS08 (serious health hazard), GHS09 (hazardous to the environment).

What is the UN number of Thimerosal?

Thimerosal is transported under UN 2025. Check the supplier SDS and the current ADR, IMDG or IATA rules before shipping.

Where can I get the SDS for Thimerosal?

Ask the supplier for the safety data sheet of the exact grade you buy. Suppliers on CompoundList can attach their SDS to listings and send it with a quote. This page is a GHS classification summary, not an SDS.

GHS classification summary, not an SDS. Always check the supplier's SDS. Last updated 7 Oct 2026. Report an error

48 suppliers
Free quotes, contact stays private
Get quotes