Trometamol SDS/MSDS (Safety Data Sheet)

3.1 Substances
Product name: Trometamol
CAS Number: 77-86-1
PubChem CID: 6503
Molecular formula: C4H11NO3
Molecular weight: 121.14 g/mol
IUPAC name: 2-amino-2-(hydroxymethyl)propane-1,3-diol

3.2 Mixtures
Not applicable (pure substance).

4.1 Description of first aid measures
Inhalation: Move to fresh air. Keep at rest in a position comfortable for breathing. Seek medical attention if symptoms persist.
Skin contact: Wash with plenty of soap and water. Remove contaminated clothing. Seek medical attention if irritation develops.
Eye contact: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing. Seek medical attention.
Ingestion: Rinse mouth. Do NOT induce vomiting unless directed by medical personnel. Seek medical attention.

4.2 Most important symptoms and effects, both acute and delayed
See Section 11 (Toxicological Information).

4.3 Indication of any immediate medical attention and special treatment needed
Treat symptomatically. Contact a poison control center or physician for severe exposure.

5.1 Extinguishing media
Suitable: Water spray, dry chemical, carbon dioxide (CO2), alcohol-resistant foam.
Unsuitable: None known.

5.2 Specific hazards arising from the substance or mixture
Combustible. Heating may produce toxic fumes.

5.3 Advice for firefighters
Wear self-contained breathing apparatus (SCBA) and full protective clothing.
Fight fire from upwind. Cool containers with water spray until fire is extinguished.

6.1 Personal precautions, protective equipment and emergency procedures
Wear appropriate personal protective equipment (see Section 8).
Avoid breathing dust/vapor. Ensure adequate ventilation.
Evacuate personnel to safe areas. Keep people away from and upwind of spill.

6.2 Environmental precautions
Prevent product from entering drains, waterways, or soil.
Contain spill with inert absorbent material.

6.3 Methods and materials for containment and cleaning up
SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

7.1 Precautions for safe handling
Tromethamine injection should be stored at 20-25 °C; freezing should be avoided. Unused portions of tromethamine solution should be discarded.

7.2 Conditions for safe storage, including any incompatibilities
Tromethamine injection should be stored at 20-25 °C; freezing should be avoided. Unused portions of tromethamine solution should be discarded.
Store away from incompatible materials (see Section 10).
[Note: Specific storage temperature not available in public databases. Refer to supplier Certificate of Analysis (COA) for exact storage conditions.]
Store in original container. Keep upright to prevent leakage.

9.1 Information on basic physical and chemical properties
a) Appearance: Liquid; Large Crystals; Dry Powder; Other Solid
b) Odor: SLIGHT, CHARACTERISTIC ODOR
c) Odor threshold: No data available
d) pH: pH of 0.1 molar aq soln = 10.4
e) Melting point/freezing point: 171-172 °C
f) Initial boiling point and boiling range: 219-220 °C at 10 mm Hg
g) Flash point: No data available
h) Evaporation rate: No data available
i) Flammability (solid, gas): No data available
j) Upper/lower flammability or explosive limits: No data available
k) Vapor pressure: 0.000022 [mmHg]
l) Vapor density: No data available
m) Relative density: No data available
n) Water solubility: 79.1 mg/mL in ethylene glycol; 26 mg/mL in methanol; 14.6 mg/mL in anhyd ethanol; 22 mg/mL in 95% ethanol; 14 mg/mL in dimethyl formamide; 20 mg/mL in acetone; 0.5 mg/mL in ethyl acetate; 0.4 mg/mL in olive oil; 0.1 mg/mL in cyclohexane; 0.05 mg/mL in chloroform; less than 0.05 mg/mL in carbon tetrachloride
o) Partition coefficient: n-octanol/water: Log P (n-octanol/water): -2.9
p) Auto-ignition temperature: No data available
q) Decomposition temperature: No data available
r) Viscosity: No data available
s) Explosive properties: No data available
t) Oxidizing properties: No data available

9.2 Other information
Topological Polar Surface Area (TPSA): 86.7 Ų
Complexity: 54

11.1 Information on toxicological effects
Acute toxicity:
No acute toxicity data available.
Skin corrosion/irritation:
Causes skin irritation (H315).
Serious eye damage/eye irritation:
Causes serious eye irritation (H319).
Respiratory or skin sensitization:
No data available.
Germ cell mutagenicity:
No data available.
Carcinogenicity:
No data available.
Reproductive toxicity:
No data available.
Specific target organ toxicity (single exposure):
No data available.
Specific target organ toxicity (repeated exposure):
No data available.
Aspiration hazard:
No data available.

11.2 Additional information
Carcinogen classification:
Tris(chloropropyl) phosphate (TCPP)
Group 2A: Probably carcinogenic to humans
Volume 141
In prep.
2026
Data source: Hazardous Substances Data Bank (HSDB) via PubChem.

12.1 Toxicity
Tromethamine's production and use as an emulsifying agent, in the synthesis of surface-active agents and vulcanization accelerators may result in its release to the environment through various waste streams. If released to air, an estimated vapor pressure of 2.2X10-5 mm Hg at 25 °C indicates that tromethamine is expected to exist in both the vapor and particulate phase in the ambient atmosphere. Vapor-phase tromethamine is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals; the half-life for this reaction in air is estimated to be 11hours. Particulate-phase tromethamine is removed from the atmosphere by wet and dry deposition. Tromethamine does not contain chromophores that absorb at wavelengths >290 nm and therefore is not expected to be susceptible to direct photolysis by sunlight. If released to soil, an estimated Koc value of 1 indicates that tromethamine is expected to possess very high mobility in soil. The pKa of tromethamine is 8.07. Thus, this compound will partially exist in cation form in the environment and cations generally adsorb to organic carbon and clay more strongly than their neutral counterparts. As a result, tromethamine may have greater adsorption and less mobility than its estimated Koc value indicates. Volatilization from moist soil is not expected since cations do not volatilize and the estimated Henry's Law constant for the neutral species (free base) of tromethamine is 8.7X10-13 atm cu m/mol. Tromethamine is not e

12.2 Persistence and degradability
No data available.

12.3 Bioaccumulative potential
Log P (n-octanol/water): -2.9
Low potential for bioaccumulation (Log P < 3).

12.4 Mobility in soil
No data available.

12.5 Results of PBT and vPvB assessment
PBT/vPvB assessment not available.

12.6 Other adverse effects
No other adverse ecological effects identified.

13.1 Waste treatment methods
Waste Treatment Methods: Waste material must be disposed of in accordance with national and local regulations. Leave chemicals in original containers and do not mix with other waste. Handle uncleaned containers in the same manner as the product itself.

14.1 UN number
Not regulated as dangerous goods (research quantities typically exempt).

14.2 UN proper shipping name
Not subject to transport regulations (small quantities for research use).

14.3 Transport hazard class(es)
Not classified as dangerous goods for transport (research quantities).

14.4 Packing group
Not applicable (not regulated as dangerous goods in typical research quantities).

14.5 Environmental hazards
Marine pollutant: No (not classified as environmentally hazardous per GHS).

14.6 Special precautions for user
Transport in original packaging. Ensure containers are tightly sealed.
For bulk or commercial quantities, consult applicable transport regulations (DOT, IATA, IMDG).

14.7 Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code
Not applicable.

15.1 Safety, health and environmental regulations/legislation specific for the substance or mixture
US EPA / TSCA: Subject to EPA TSCA regulations
EU ECHA / REACH: Registered (REACH Active)

SARA 302 Components:
No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302.
SARA 313 Components:
This material does not contain any chemical components with known CAS numbers that exceed the threshold (De Minimis) reporting levels established by SARA Title III, Section 313.
SARA 311/312 Hazards:
Acute (short-term) health hazard

Massachusetts Right To Know Components:
This material contains components subject to the Massachusetts Right to Know Act. See Section 2 for hazard classification.
Pennsylvania Right To Know Components:
This material contains components subject to the Pennsylvania Right to Know Act. See Section 2 for hazard classification.
New Jersey Right To Know Components:
This material contains components subject to the New Jersey Right to Know Act. See Section 2 for hazard classification.

California Prop. 65 Components:
This product does not contain any chemicals known to the State of California to cause cancer, birth defects, or any other reproductive harm.

Other regulatory listings:
- The Australian Inventory of Industrial Chemicals: Chemical: 1,3-Propanediol, 2-amino-2-(hydroxymethyl)-
- FDA Requirements: The Approved Drug Products with Therapeutic Equivalence Evaluations List identifies currently marketed prescription drug products, incl tromethamine, approved on the basis of safety and effectiveness by FDA under sections 505 of the Federal Food, Drug, and Cosmetic Act.

15.2 Chemical safety assessment
A chemical safety assessment has not been carried out for this substance.
For research-use-only compounds, no CSA is required under REACH Annex I.

Revision Date: 2026/09/09
Further Information: The information provided is believed to be correct but is not exhaustive and should be used only as a guideline based on current knowledge. It does not represent a guarantee of the properties of the product. Selleck Chemicals Corporation and its Affiliates shall not be held liable for any damage resulting from handling or contact with the product.