Product Category

GMP Buffer

GMP Manufactured Process Chemical

USP, GMP Grade

Product Code: TRIS-4220 | Previously: TR4220

Intended For Use In Pharmaceutical GMP Processes

Tris, commonly used as a buffer in biochemistry and molecular biology, stabilizes the pH of solutions in electrophoresis and other biological applications. It is also an enzyme inhibitor used in the biopharmaceutical industry and is commonly utilized in electro- chromatography, UV analysis and HPLC applications. Tris is extensively used as a biological buffer or a component of buffer solutions. Tris can be used as a “Good’s” buffer because it has low UV absorptivity, minimal reactivity, stable pH and is soluble in water.

Product Specifications

Absorbance (40%) 290 nm
0.2 a.u. maximum
Appearance and Color White / Crystals
Assay 99.0-101.0%
Enzymes RNase
None Detected
None Detected
None Detected
Heavy Metals 5 ppm maximum
Identification B Passes Test
Identification C Passes Test
Identification (IR) Passes Test
Insoluble Matter 0.005% max.
Karl Fischer Water 2.0% max.
Loss on Drying 1.0% max.
Melting Range




Residue on Ignition 0.1% max.
Trace Metals    Arsenic (As)
Calcium (Ca)
Copper (Cu)
Iron (Fe)
Lead (Pb)
Magnesium (Mg)
5 ppm max.
5 ppm max.
5 ppm max.
5 ppm max.
5 ppm max.
5 ppm max.
Printable Version
Key Compliance Attributes of BioSpectra Grades Bio Pharma Grade IPEC GMP Compliant Manufactured
Suitable for Research and Diagnostic  
Each Batch 100% Analyzed  
Management of Change  
Validated Analytical Methods  
Compendial Testing  
Trace Metals Analyzed  
Stability Testing Program  
BioSpectra Supply Chain Audit Trail  
Product Origin Statement  
Customer Quality Audits  
Validated Manufacturing Process  
US Manufactured at BioSpectra  
IPEC cGMP Compliant Manufactured  
Customized Additional Specifications Yes-image
Multi-Compendial Testing  
Low Bioburden Low Endotoxin (LBLE)  
Enzyme Tested  
Suitable for use as Excipient  
Microbial / Endotoxin Tested  
Manufactured in FDA Registered Facility  
Customized Manufacturing Schedule  
Custom Regulatory Packet  
Accelerated Stability  
Video Conference access to BioSpectra Sites  
Complete access to Product Traceability  
Access to Supply Chain Information  

Yes-imageindicates an attribute or level of compliance which is granted or available based on the purchase of the product grade.
Bio Pharma Grade: Intended for use as IPEC cGMP Compliant Chemical
LBLE: LBLE applies when product specifications include requirements for Bioburden Testing (TAMC/TYMC and/or Endotoxin).
LBLE stands for Low Bioburden, Low Endotoxin non-sterile products suitable for further use in parenteral manufacturing and other sterile applications.


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General Product Description:

  • The manufacturing of Tromethamine TRIS-4220 is performed at BioSpectra’s Stroudsburg, PA facility and is conducted in a dedicated processing area using only dedicated equipment.
  • Tromethamine is a White Crystalline product.
  • Molecular Formula: C4H11NO3
  • Molecular Weight: 121.14 g/mol.
  • CAS Number: 77-86-1.
  • There are no known major food allergens (as defined by FDA and WHO) in the manufacture of this product.
  • BioSpectra certifies that all Tromethamine TRIS-4220 manufactured at BioSpectra and its raw materials are not derived from or come in contact with animal parts, products, and/or byproducts.
  • Tromethamine manufactured at BioSpectra and any raw materials used in the manufacture of Tromethamine at BioSpectra are not subject to genetic modification.
  • Synonyms: Tris, Tromethamine, Tris (hydroxymethyl) aminomethane.

GMP Compliance:

Bio Pharma Grade Tromethamine TRIS-4220 is suitable for use as a process chemical. It is manufactured in accordance with the IPEC-PQG Joint Good Manufacturing Practice Guide. This grade of Tromethamine is not suitable to be used as an Active Pharmaceutical Ingredient, Drug, Drug Product or Household Item.

Retest Date:

The recommended retest period for Tromethamine is two years from the date of manufacture.

Storage and Shipping Conditions:

Ship and Store in ambient temperature.

Package Sizes:

10kg, 25kg and 50kg pails.

Additional Packaging Information