missing translation for 'onlineSavingsMsg'
Learn More
  1. Home
  2. Products
  3. Chemicals
  4. Organic compounds
  5. Benzenoids
  6. Naphthalenes
  7. alpha-Naphtholphthalein

alpha-Naphtholphthalein

Catalog No. p-7051448
Change view
Click to view available options
Quantity:
1 g
5 g
25 g
3 product options available for selection
Product selection table with 3 available options. Use arrow keys to navigate and Enter or Space to select.
Catalog No. Quantity
AA4122103 1 g
AA4122106 5 g
AA4122114 25 g
Use arrow keys to navigate between rows. Press Enter or Space to select a product option. 3 options available.
3 options
Catalog No. AA4122103 Supplier Thermo Scientific Chemicals Supplier No. 04122103
Only null left

Description

Indicator in 0.1% or 0.04% alcohol solution | CAS: 596-01-0 | C28H18O4 | 418.448 g/mol

Indicator in 0.1% or 0.04% alcohol solution.α-Naphtholphthalein is used as a pH indicator and operates in the pH ranges between 7.3 and 8.7. It is also used in the designing of optical carbon dioxide sensor based on fluorescence intensity.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Chemical Identifiers

CAS 596-01-0
Molecular Formula C28H18O4
Molecular Weight (g/mol) 418.448
MDL Number MFCD00036202
InChI Key HQHBAGKIEAOSNM-UHFFFAOYSA-N
Synonym alpha-naphtholphthalein, naphtholphthalein, 1-naphtholphthalein, a-naphtholphthalein, 3,3-bis 4-hydroxynaphthalen-1-yl isobenzofuran-1 3h-one, unii-2qeg1706nn, 1 3h-isobenzofuranone, 3,3-bis 4-hydroxy-1-naphthalenyl, naphtholphthalein blue, alpha-naphtholphtalein, 3,3-bis 4-hydroxy-1-naphthyl phthalide
PubChem CID 68993
IUPAC Name 3,3-bis(4-hydroxynaphthalen-1-yl)-2-benzofuran-1-one
SMILES C1=CC=C2C(=C1)C(=CC=C2O)C3(C4=CC=CC=C4C(=O)O3)C5=CC=C(C6=CC=CC=C65)O

Specifications

Melting Point 238°C to 240°C
Color Brown
Quantity 1 g
Merck Index 14,6389
Solubility Information Soluble in ethanol. Insoluble in water.
Formula Weight 418.45
Physical Form Powder
Chemical Name or Material alpha-Naphtholphthalein

Safety and Handling

Hazard Category Warning
Hazard Statement GHS H Statement
H315-H319-H335
Causes skin irritation.
Causes serious eye irritation.
May cause respiratory irritation.
Precautionary Statement GHS P Statement
P261-P280-P305+P351+P338-P304+P340-P405-P501a
Avoid breathing dust/fume/gas/mist/vapors/spray.
Wear protective gloves/protective clothing/eye protection/face protection.
IF IN EYES: Rinse cautiously with water for several minutes.
Remove contact lenses, if present and easy to do.
Continue rinsing.
IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing.
Store locked up.
Dispose of contents/container in accordance with local/regional/national/international regulations.
EINECSNumber 209-875-5
TSCA No
Recommended Storage Ambient temperatures

RUO – Research Use Only