HEPPS Property

Melting point:

237-239 °C(lit.)

Density 

1.2684 (rough estimate)

refractive index 

1.6800 (estimate)

storage temp. 

Sealed in dry,Room Temperature

solubility 

H₂O: 1 M at 20 °C, clear, colorless

form 

Powder/Solid

color 

White

PH Range

7.3 - 8.7

PH

5.0-6.5 (25℃, 0.1M in H2O)

pka

8.0(at 25℃)

Water Solubility 

Soluble in water. 25.2 g/L (20°C)

λmax

λ: 260 nm Amax: 0.055
λ: 280 nm Amax: 0.045

BRN 

3957385

CAS DataBase Reference

16052-06-5(CAS DataBase Reference)

EPA Substance Registry System

1-Piperazinepropanesulfonic acid, 4-(2-hydroxyethyl)- (16052-06-5)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38-22

Safety Statements 

24/25-36-26

WGK Germany 

3

RTECS 

TM2649130

TSCA 

Yes

HazardClass 

IRRITANT

HS Code 

29335995

Toxicity

quail,LD50,oral,> 316mg/kg (316mg/kg),Ecotoxicology and Environmental Safety. Vol. 6, Pg. 149, 1982.

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H332Harmful if inhaled

H335May cause respiratory irritation

Precautionary statements

P280Wear protective gloves/protective clothing/eye protection/face protection.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P310Immediately call a POISON CENTER or doctor/physician.

HEPPS Chemical Properties,Usage,Production

Chemical Properties

white crystalline powder

Uses

HEPPS (EPPS) is a commonly used Good's buffer. It is often used as separator in ultrathin isoelectric focusing gels and enhances the resolution of phosphoglucomutase. It is used as a buffering agent in biology and biochemistry. HEPPS is a biological buffer with a useful pH range of 7.3-8.7 and a pKa=8.0 at 25°C. Research on mice with Alzheimer's disease-like amyloid beta plaques has shown that HEPPS can cause the plaques to break up, reversing some of the symptoms in the mice. HEPPS was reported to dissociate amyloid beta oligomers in patients' plasma samples enabling blood diagnosis of Alzheimer's disease.

Definition

ChEBI: HEPPS is a N-(sulfoalkyl)piperazine and a N-(2-hydroxyethyl)piperazine.

General Description

HEPPS, or N-(2-Hydroxyethyl)piperazine-N′-(3-propanesulfonic acid), is a zwitterionic buffering agent commonly used in biochemical and molecular biology research. Its mechanism of action is rooted in its ability to maintain a stable pH environment, which is crucial for various enzymatic reactions and protein studies. HEPPS is especially favoured for its buffering capacity in the physiological pH range, typically between pH 6.8 and 8.2, making it ideal for biological assays and cell culture experiments. This compound is extensively utilized in preparing cell culture media, where maintaining a consistent pH is essential for cell viability and growth. Additionally, HEPPS is employed in biochemical assays, such as enzyme kinetics studies, where precise pH control is necessary to accurately measure enzymatic activity. Furthermore, HEPPS has found applications in molecular biology techniques, including nucleic acid purification, PCR (polymerase chain reaction), and protein analysis by SDS-PAGE (sodium dodecyl sulfate polyacrylamide gel electrophoresis). Its compatibility with various biological systems and stability under physiological conditions make HEPPS a valuable tool in research laboratories for maintaining optimal pH conditions and ensuring reliable experimental outcomes in various biochemical and molecular biology studies.

Flammability and Explosibility

Not classified