Bis-tris methane, also known as BIS-TRIS or BTM, is a buffering agent used in biochemistry.
| Specification | |
| Synonyms | 2,2-Bis(hydroxymethyl)-2,2′,2″-nitrilotriethanol, 2-Bis(2-hydroxyethyl)amino-2-(hydroxymethyl)-1,3-propanediol, Bis(2-hydroxyethyl)amino-tris(hydroxymethyl)methane |
| Categories | Biological buffers, Buffers A to Z |
| Assay | 99% |
| Appearance (Colour) | White |
| Appearance (Form) | Powder or crystalline powder |
| (K.F) Water Content % | <1.0 |
| PH (1% aq.) | 9.5 ~ 11.0 |
| CAS | 6976-37-0 |
| HSN Code | 29221990 |
| Solubility (0.1M aq.) | Clear, colorless solutions |
| Ultraviolet absorbance (0.1M aq.) | <0.04 |
| Ultraviolet absorbance (0.1M aq.) | <0.02 |
Safety Information
- Symbol GHS07 GHS07
- Signal word Warning
- Hazard statements H315-H319-H335
- Precautionary statements P261-P305 + P351 + P338
- Personal Protective Equipment dust mask type N95 (US), Eye shields, Gloves
- Hazard Codes Xi
- Risk Statements 36/37/38
- Safety Statements 26-36
- WGK Germany 3



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