The structure of Thimerosal
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Thiomersal

Thimerosal (also spelled thiomersal) is a mercury-containing organic compound (organomercurial). more...

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Thimerosal was developed and registered under the trade name Merthiolate in 1929 by the Indianapolis-based pharmaceutical company, Eli Lilly, and marketed as an antibacterial and antifungal agent. It has been used as an additive to prevent bacterial contamination in vaccines and other compounds such as immune globulin preparations, skin test antigens, anti-venins, ophthalmic and nasal products, and tattoo inks.

The chemical formula for thimerosal is C9H9HgNaO2S. In the body it is metabolized to ethylmercury (C2H5Hg+) and thiosalicylate. Thimerosal causes susceptible bacteria to autolyze (break down their own cells with self-produced enzymes) via an unknown mechanism.

Material Safety Data Sheet

See Full Material Safety Data Sheet

Synonyms: ethyl-2-mercaptobenzoato(2-)-O,S--mercurate sodium, mercury((o-carboxyphenyl)thio)ethyl sodium salt, mercurothiolate, merzonin sodium, SET, sodium ethylmercuric thiosalicylate, sodium merthiolate, thimerosalate, thiomersalate, merfamin, merthiolate, merthiolate sodium, merzonin, nosemack, merseptyl, 2-mercaptobenzoic acid mercury complex, elcide 75, thiomersal, ethylmercurithiosalicylic acid sodium salt, various other systematic and non-systematic names.

Usage

Drug, anti-infective, anti-bacterial, anti-fungal, preservative.

Physical data

Appearance: white or slightly yellow powder

  • Molecular formula: C9H9HgNaO2S
  • Molar Mass: 404.81 g/mol
  • CAS No: 54-64-8
  • EC No: 200-210-4
  • EC index number: 080-004-00-7
  • HS Code: 2930 90 70
  • Storage class (VCI): 6.1 B (Non-flammable toxic materials)
  • Packing-category: G
  • WGK: 3 (highly polluting substance)
  • R Phrase: R 26/27/28-33-50/53
  • S Phrase: S 13-28.1-36-45-60-61
  • pH value: ∼6.7 (10 g/l, H2O, 20 °C)
  • Melting point: 232 - 233 °C (decomposition)
  • Bulk density: 500 kg/m³
  • Solubility in water: 1000 g/l (20 °C)

Stability

Stable. May degrade in sunlight. Incompatible with strong acids, strong bases, strong oxidizing agents, iodine, heavy metal salts.

Toxicology

Poison. Experimental neoplastigen and teratogen. Harmful by inhalation and ingestion. May cause reproductive damage. May be harmful through skin contact. Typical OEL 0.05 mg/m3.

Chemical Hazard Symbol: T+ = Very toxic Criteria: Inhalation, swallowing, or absorption through the skin in very small amounts can cause considerable damage to health, and may sometimes be lethal. In the event of exposure serious evidence of severe, possibly irreversible damage to health by single, repeated, or prolonged absorption. MSDS Hazard Symbol T+

Read more at Wikipedia.org


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What else aren't they telling us?
From Evening Standard (London), 8/18/04 by ALLISON PEARSON

A FEW weeks ago, I wrote about my outrage at discovering that a jab given to millions of British babies contained thiomersal, a mercury-based substance that makes infants twice as likely to develop speech impediments and six times more prone to autism.

Thiomersal, I learned, was banned in America five years ago. Health officials in this country promised to phase the toxin out in 1999, but it emerged that the NHS was still buying millions of mercury-laced DTwP vaccines from France.

How miraculous, then, that last week the Department of Health suddenly announced that new jabs will be free of thiomersal. Better late than never, but the handling of the case shows just why our trust in vaccines is so damaged.

The public is frequently ticked off by politicians for being "hysterical", yet where there is a proven risk, as with mercury, officials move with a magisterial slowness that betrays everyone they serve.

Yes, parents must get their children vaccinated for their own sake, as well as for the sake of the pregnant woman whose baby could end up blind and deaf if she catches measles.

Keeping your precious baby unvaccinated, just in case, while expecting the masses to have their sprogs vaccinated is morally repellent.

Equally revolting, though, is the Government's attitude, which was inadvertently revealed when I asked my son's health visitor why babies were given jabs earlier and earlier.

"Oh," she said, "that's because they stop bringing the babies in after a few weeks, so we need to get them while we can."

In other words, multiple jabs are given to tiny babies, not because it is better for them to have them in that form, at that age, but because the Government wants to get the vaccines into them come what may.

In the light of this patronising attitude, parents are probably right to wonder what other things they aren't being told.

For their own good, you understand

I'M sure that some of the criticism of Madonna's new show is justified, but for long-time fans it still stings.

Madge, 46 this week, bless her, can still bend over three boys backwards, when some of us have to call the osteopath every time we bend down to pick up the kids' socks. For this alone, she deserves our undying admiration.

(c)2004. Associated Newspapers Ltd.. Provided by ProQuest Information and Learning Company. All rights Reserved.

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