PROPYL RED

Synonyms. Propyl red; 2-(2-(4-(Dipropylamino)phenyl)diazenyl)benzoic acid; 2-(4-Dipropylaminophenylazo)benzoic acid; 4-(Dipropylamino)azobenzene-2'-carboxylic acid;

PROPYL RED 

Click for original image

 

PRODUCT IDENTIFICATION

CAS RN

2641-01-2

EINECS RN

220-140-8

FORMULA

(C3H7)2NC6H4N=NC6H4COOH

MOLE WEIGHT

325.40

H.S CODE

2927.00.5000

SMILES

O=C(O)c1c(\N=N\c2ccc(N(CCC)CCC)cc2)cccc1

CLASSIFICATION

pH indicator

EXTRA NOTES

Transition pH range: 4.6 ~ 6.6

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE.

dark red crystalline powder

MELTING POINT

173 ~ 175 C

BOILING POINT

 

DENSITY

 

SOLUBILITY IN WATER

 

SOLVENT SOLUBILITY

 

VAPOR DENSITY

 

log P(octanol-water)

 

VAPOR PRESSURE

 

AUTOIGNITION TEMP

 
pK

 

REFRACTIVE INDEX

 

FLASH POINT

 

 

STABILITY AND REACTIVITY
STABILITY Stable under normal conditions.

INCOMPATIBLE MATERIALS

Strong oxidizing agents

POLYMERIZATION

Has not been reported

NFPA RATINGS

Health: 1, Flammability: 0, Reactivity: 0

 

EXTERNAL LINKS & GENERAL DESCRIPTION

USA.gov - Propyl red

Wikipedia Linking - pH indicator

Google Scholar Search - Propyl red

PubChem Compound Summary - Propyl red

http://www.ncbi.nlm.nih.gov/ -  Propyl red

Material Safety Data Sheet - Propyl red

EPA - Substance Registry Services - Propyl red

 

SALES SPECIFICATION

APPEARANCE

dark red crystalline powder

MELTING POINT

173 ~ 175 C

TRANSITION

Visual Interval: pH 4.6 (red) to pH 6.6 (yellow)

 

TRANSPORT & REGULATORY INFORMATION

UN NO.

 

HAZARD CLASS

 

PACKING GROUP  

 

SAFETY INFORMATION

HAZARD OVERVIEW

Not a dangerous substance or mixture according to GHS (Globally Harmonised System). Eyes: May cause eye irritation. Skin: May be harmful if absorbed through skin. May cause skin irritation. Inhalation: May be harmful if inhaled. May cause respiratory tract irritation. Ingestion: May be harmful if swallowed.

HAZARD CODES

 

RISK PHRASES

 

SAFETY PHRASES

 

 

PACKING

Preserve in light-resistant and well-closed containers