PR1MA™  HEPES, Sodium Salt [N-(2-Hydroxyethyl) piperazine-N'-(2-ethanesulfonic acid)]

Common Name: N-(2-Hydroxyethyl)piperazine-N'-(2-ethanesulfonic acid)
CAS Number: 75277-39-3
Molecular Weight: 260.3
Chemical Formula: C₈H₁₇N₂O₄SNa
Solubility: Water
Storage Temp: Room Temperature

• pKa (20°C): 7.45-7.65
• pH Range: 6.8-8.2

Research or further manufacturing use only, not for food or drug use.

• Appearance: White crystalline powder
• Assay (Titration, dried basis): ≥ 98.0 %
• Chloride (Cl): ≤ 0.1 %
• Heavy Metals (as Pb): ≤ 1 ppm
• Loss on Drying @ 105 ^oC, 3hrs: ≤ 2.0 %
• pH (1% aqueous @ 25 ^oC): 9.4 - 11.0
• pKa @ 20°C: 7.45 - 7.65
• Solubility (1M Solution in H₂O): Clear, complete and colorless
• UV Absorbance @ 250nm 1M: ≤ 1.0

HEPES, Sodium, Salt,PR1MA, MIDSCI, Laboratory Supplies, High-Quality, Research, Consumables, Reagents, Equipment, Customer Service, Quick Shipping, Satisfaction Guarantee, Personalized Solutions, Universities

PR1MA™ Bicine Ultra-Pure

CAS Number: 150-25-4
Molecular Weight: 163.2
Chemical Formula: C₆H₁₃NO₄
Solubility: Water
Storage Temp: Room Temperature

Zwitterionic buffer used in a variety of molecular biology applications such as protein resolution, protein crystallization and SDS-PAGE.

pKa @ 25°C: 8.3
pH Range: 7.6-9.0
Melting Range: 190-192°C

Research or further manufacturing use only, not for food or drug use.

• Appearance: White Powder
• FTIR: Conforms to reference
• Optical ABS @ 260 NM: ≤ 0.1
• Optical ABS @ 280 NM: ≤ 0.1

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PR1MA™ bis-TRIS [bis-(2-hydroxyethyl)aminotris(hydroxymethyl)methane]

Common Name: bis(2-Hydroxyethyl)aminotris (hydroxymethyl)methane
CAS Number: 6976-37-0
Molecular Weight: 209.2
Chemical Formula: C₈H₁₉NO₅
Solubility: Water
Storage Temp: Room Temperature

Research or further manufacturing use only, not for food or drug use.

• Appearance: White crystalline powder
• Assay: ≥ 99.0 %
• Identification (IR): Matches reference
• Melting Point: Report ^oC
• pH, 1.0M Aqueous solution @25ºC: 9.5 - 11.0
• pKa @ 20°C: 6.0 - 7.0
• Solubility: Complete and clear
• UV Absorbance @280nm, 1.0 M in H₂O: ≤ 0.40

PR1MA™  HEPES, Free Acid [N-(2-Hydroxyethyl) piperazine N'-(2-ethanesulfonic acid)]

Common Name: [N-(2-Hydroxyethyl) piperazine N'-(2-ethanesulfonic acid)]
CAS Number: 7365-45-9
Molecular Weight: 238.3
Chemical Formula: C₈H₁₈N₂O₄S
Solubility: Water
Storage Temp: Room Temperature

Zwitterionic N-substituted aminosulfonic acid buffer.

• pka (25°C): 7.5
• pH Range (Working): 6.8 - 8.2
• Heavy Metals: <0.001% Max

• Appearance: White Crystalline Powder
• Assay (Titration, dried basis): ≥ 99.5 %
• DNase, RNase, protease: Not Detected
• Endotoxin (0.2% Solution): ≤ 0.25 EU/ml
• Heavy Metals (as Pb): ≤ 0.001 %
• Identification (IR): Pass
• Iron (Fe): ≤ 0.0005 %
• Loss on Drying: ≤ 1.0 %
• pH (5% in water): 5.0 - 6.5
• pKa @ 20°C: 7.35 - 7.70
• Residue on Ignition: ≤ 0.1 %
• Solubility (1M Solution in Water ): Clear and Colorless Solution
• Sulfate: ≤ 0.05 %
• UV Absorbance (1M@260nm): ≤ 0.05
• UV Absorbance (1M@280nm): ≤ 0.05

PR1MA™ HEPPS [N-(2-Hydroxyethyl)piperazine-N'-(3-propane sulfonic acid)] [EPPS]

Common Name: HEPPS [N-(2-Hydroxyethyl)piperazine-N'-(3-propane sulfonic acid)] [EPPS]
CAS Number: 16052-06-5
Molecular Weight: 252.3
Chemical Formula: C₉H₂₀N₂O₄S
Solubility: Water
Storage Temp: Room Temperature

Research or further manufacturing use only, not for food or drug use.

• Appearance: White Crystalline Powder
• Assay (Titration, dried basis): ≥ 99.0 %
• Loss on Drying: ≤ 1.0 %
• pH (1mol/L in Water @ 20 ^oC: 5.0 - 7.0
• Solubility (0.1M in water): Clear and Colorless

PR1MA™ Citric Acid Anhydrous

CAS Number: 77-92-9
Molecular Weight: 192.1
Chemical Formula: C₆H₈O₇
Solubility: Water
Storage Temp: Room Temperature

Research or further manufacturing use only, not for food or drug use.

• Appearance: Fine white crystalline powder
• Assay (Titration): ≥ 99.5 %
• Carbonizable Substances (H₂SO₄): Pass Test
• Clarity and Color: Pass Test
• Identification: Pass Test
• Lead : ≤ 0.5 mg/kg
• Limit of Oxalic Acid: ≤ 0.036 %
• Oxalate Test: Pass Test
• Residual Solvents: Meet requirements
• Residue on Ignition: ≤ 0.05 %
• Sulfate: ≤ 0.015 %
• Water: ≤ 0.5 %