Sigma 7-9®

• Catalog No.: T1378
• CAS Number: 77-86-1
• M. F.: C4H11NO3
• M. W.: 121.13504
• Purity: ≥99% (titration)

SYNONYMS

• IUPAC name: 2-amino-2-(hydroxymethyl)propane-1,3-diol
• IUPAC Traditional name: tris buffer
• Synonyms: 氨基丁三醇; 2-Amino-2-(hydroxymethyl)-1,3-propanediol; Tris base; Tris(hydroxymethyl)aminomethane; Trometamol; THAM; 2-氨基-2-(羟甲基)-1,3-丙二醇; Tris 碱; Trizma® base; Trizma® 碱; 三羟甲基氨基甲烷

DATABASE IDS

• CAS Number: 77-86-1
• EC Number: 201-064-4
• Beilstein Number: 741883
• PubChem SID: 24899961
• MDL Number: MFCD00004679

PROPERTIES

• GHS Hazard statements: H315-H319-H335
• European Hazard Symbols: Irritant (Xi)
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves
• GHS Precautionary statements: P261-P305 + P351 + P338
• Risk Statements: 36/37/38
• RTECS: TY2900000
• Safety Statements: 26-36
• German water hazard class: 2
• GHS Signal Word: Warning
• abs.: A40%/290 ≤0.4
• Cation Traces: heavy metals (as Pb): ≤5 ppm
• Description: aminopeptidase substrate
• Impurities: ≤0.5% water (Karl Fischer)
• Linear Formula: NH2C(CH2OH)3
• Purity: ≥99% (titration)
• Useful pH Range: 7 - 9
• pKa: 8.1 (25°C)
• Apperance: white to off-white crystalline
• Boiling Point: 219-220 °C/10 mmHg(lit.)
• Melting Point: 167-172 °C(lit.)

DETAILS

Description (English)

General description
A 40% (w/w) solution in water is clear, colorless to faint yellow
Other Notes
Easily compare specifications for Trizma products with the Trizma specification table.
The pH values of all buffers are temperature- and concentration-dependent. For Tris buffers, pH increases about 0.03 unit per °C decrease in temperature, and decreases 0.03-0.05 unit per ten-fold dilution.For precise applications, use a carefully calibrated pH meter with a glass/calomel combination electrode.
Legal Information
Sigma 7-9 is a registered trademark of Sigma-Aldrich Co. LLC
Trizma is a registered trademark of Sigma-Aldrich Co. LLC

Description (简体中文)

General description
40% (w/w) 的水溶液为透明的无色至微黄色液体。
Other Notes
便于将 Trizma 产品的规格与 Trizma 规格表进行比较。
所有缓冲液的 pH 值与温度和浓度都有关。对于 Tris 缓冲液，温度每降低 1°C，pH 增加约 0.03 个单位，浓度每稀释 10 倍，pH 降低 0.03-0.05 个单位。 对于精确应用，使用带有玻璃/甘汞复合电极的经仔细校正的 pH 计。
法律信息
Sigma 7-9 注册商标 Sigma-Aldrich Co. LLC
Trizma 注册商标 Sigma-Aldrich Co. LLC