SIGMA-ALDRICH
Material Safety Data Sheet
Date Printed: 31/AUG/2005
Date Updated: 14/MAR/2004
Version 1.2
According to 91/155/EEC
1 - Product and Company Information
Product Name L-THYROXINE FREE ACID
Product Number T2376
Company Sigma-Aldrich Pty. Ltd.
12 Anella Avenue
Castle Hill NSW 2154
Australia
Technical Phone # +61 2 9841 0555 (1800 800 097)
Fax +61 2 9841 0500 (1800 800 096)
Emergency Phone # +44 8701906777 (1800 448 465)
2 - Composition/Information on Ingredients
Product Name CAS # EC no Annex I
Index Number
L-THYROXINE FREE ACID 51-48-9 200-101-1 None
Formula C15H11I4NO4
Molecular Weight 776.87 AMU
Synonyms Levothyroxine * L-T4 * T4 (Hormone) *
Tetraiodothyronine *
3,3',5,5'-Tetraiodo-L-thyronine *
L-3,5,3',5'-Tetraiodothyronine * THX *
Thyreoideum * Thyroxin * L-Thyroxin * Thyroxinal
* (-)-Thyroxine * L-Thyroxine * Thyroxine, L-
(8CI)
3 - Hazards Identification
SPECIAL INDICATION OF HAZARDS TO HUMANS AND THE ENVIRONMENT
Not hazardous according to Directive 67/548/EEC.
4 - First Aid Measures
AFTER INHALATION
If inhaled, remove to fresh air. If breathing becomes difficult,
call a physician.
AFTER SKIN CONTACT
In case of contact, immediately wash skin with soap and copious
amounts of water.
AFTER EYE CONTACT
In case of contact with eyes, flush with copious amounts of
water for at least 15 minutes. Assure adequate flushing by
separating the eyelids with fingers. Call a physician.
AFTER INGESTION
If swallowed, wash out mouth with water provided person is
conscious. Call a physician.
5 - Fire Fighting Measures
EXTINGUISHING MEDIA
Suitable: Water spray. Carbon dioxide, dry chemical powder, or
appropriate foam.
SPECIAL RISKS
Specific Hazard(s): Emits toxic fumes under fire conditions.
SPECIAL PROTECTIVE EQUIPMENT FOR FIREFIGHTERS
Wear self-contained breathing apparatus and protective clothing
to prevent contact with skin and eyes.
6 - Accidental Release Measures
PROCEDURE(S) OF PERSONAL PRECAUTION(S)
Exercise appropriate precautions to minimize direct contact with
skin or eyes and prevent inhalation of dust.
METHODS FOR CLEANING UP
Sweep up, place in a bag and hold for waste disposal. Avoid
raising dust. Ventilate area and wash spill site after material
pickup is complete.
7 - Handling and Storage
HANDLING
Directions for Safe Handling: Avoid inhalation. Avoid contact
with eyes, skin, and clothing. Avoid prolonged or repeated
exposure.
STORAGE
Conditions of Storage: Keep tightly closed.
8 - Exposure Controls / Personal Protection
ENGINEERING CONTROLS
Safety shower and eye bath. Mechanical exhaust required.
GENERAL HYGIENE MEASURES
Wash thoroughly after handling.
PERSONAL PROTECTIVE EQUIPMENT
Respiratory Protection: Wear dust mask.
Hand Protection: Protective gloves.
Eye Protection: Chemical safety goggles.
9 - Physical and Chemical Properties
Appearance Physical State: Solid
Property Value At Temperature or Pressure
pH N/A
BP/BP Range N/A
MP/MP Range 235 掳C
Flash Point N/A
Flammability N/A
Autoignition Temp N/A
Oxidizing Properties N/A
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Explosive Properties N/A
Explosion Limits N/A
Vapor Pressure N/A
SG/Density N/A
Partition Coefficient N/A
Viscosity N/A
Vapor Density N/A
Saturated Vapor Conc. N/A
Evaporation Rate N/A
Bulk Density N/A
Decomposition Temp. N/A
Solvent Content N/A
Water Content N/A
Surface Tension N/A
Conductivity N/A
Miscellaneous Data N/A
Solubility N/A
10 - Stability and Reactivity
STABILITY
Stable: Stable.
Materials to Avoid: Strong bases, Strong oxidizing agents.
HAZARDOUS DECOMPOSITION PRODUCTS
Hazardous Decomposition Products: Hydrogen iodide, Nitrogen oxides
Carbon monoxide, Carbon dioxide.
HAZARDOUS POLYMERIZATION
Hazardous Polymerization: Will not occur
11 - Toxicological Information
RTECS NUMBER: YP2833500
SIGNS AND SYMPTOMS OF EXPOSURE
To the best of our knowledge, the chemical, physical, and
toxicological properties have not been thoroughly investigated.
ROUTE OF EXPOSURE
Skin Contact: May cause skin irritation.
Skin Absorption: May be harmful if absorbed through the skin.
Eye Contact: May cause eye irritation.
Inhalation: Material may be irritating to mucous membranes and
upper respiratory tract. May be harmful if inhaled.
Ingestion: May be harmful if swallowed.
TARGET ORGAN INFORMATION
Heart. Central nervous system.
CHRONIC EXPOSURE - MUTAGEN
Rat
6250 UG/KG
Subcutaneous
2D
Unscheduled DNA synthesis
CHRONIC EXPOSURE - TERATOGEN
Species: Rat
Dose: 26250 UG/KG
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Route of Application: Oral
Exposure Time: (1-21D PREG)
Result: Specific Developmental Abnormalities: Eye, ear.
Species: Rat
Dose: 410 MG/KG
Route of Application: Oral
Exposure Time: (3W PRE/1-20D PREG)
Result: Effects on Embryo or Fetus: Cytological changes
(including somatic cell genetic material).
Species: Rat
Dose: 600 UG/KG
Route of Application: Subcutaneous
Exposure Time: (19-21D PREG)
Result: Specific Developmental Abnormalities: Urogenital system.
CHRONIC EXPOSURE - REPRODUCTIVE HAZARD
Species: Rat
Dose: 1400 UG/KG
Route of Application: Oral
Exposure Time: (16-22D PREG)
Result: Effects on Newborn: Biochemical and metabolic.
Species: Rat
Dose: 450 UG/KG
Route of Application: Subcutaneous
Exposure Time: (7-15D PREG)
Result: Effects on Fertility: Post-implantation mortality (e.g.,
dead and/or resorbed implants per total number of implants).
Species: Rat
Dose: 8160 UG/KG
Route of Application: Subcutaneous
Exposure Time: (7D PRE-5D POST)
Result: Maternal Effects: Postpartum.
Species: Rat
Dose: 12 MG/KG
Route of Application: Unreported
Exposure Time: (6D MALE)
Result: Effects on Fertility: Mating performance (e.g., # sperm
positive females per # females mated; # copulations per # estrus
cycles).
Species: Mouse
Dose: 12 MG/KG
Route of Application: Subcutaneous
Exposure Time: (9-11D PREG)
Result: Specific Developmental Abnormalities: Musculoskeletal
system. Effects on Fertility: Post-implantation mortality (e.g.,
dead and/or resorbed implants per total number of implants).
12 - Ecological Information
No data available.
13 - Disposal Considerations
SUBSTANCE DISPOSAL
Contact a licensed professional waste disposal service to dispose
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of this material. Dissolve or mix the material with a combustible
solvent and burn in a chemical incinerator equipped with an
afterburner and scrubber. Observe all federal, state, and local
environmental regulations.
14 - Transport Information
RID/ADR
Non-hazardous for road transport.
IMDG
Non-hazardous for sea transport.
IATA
Non-hazardous for air transport.
15 - Regulatory Information
CLASSIFICATION AND LABELING ACCORDING TO EU DIRECTIVES
S-PHRASES: 22-24/25
Do not breathe dust. Avoid contact with skin and eyes.
Not hazardous according to Directive 67/548/EEC.
16 - Other Information
WARRANTY
The above information is believed to be correct but does not
purport to be all inclusive and shall be used only as a guide. The
information in this document is based on the present state of our
knowledge and is applicable to the product with regard to
appropriate safety precautions. It does not represent any
guarantee of the properties of the product. Sigma-Aldrich Inc.,
shall not be held liable for any damage resulting from handling or
from contact with the above product. See reverse side of invoice
or packing slip for additional terms and conditions of sale.
Copyright 2005 Sigma-Aldrich Co. License granted to make unlimited
paper copies for internal use only.
DISCLAIMER
For R&D use only. Not for drug, household or other uses.
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