应用
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.

备注
pH 7.3 (colorless to red), pH 8.7 (green to blue)Incompatible with strong oxidizing agents.

基本信息

MDL
MFCD00036202

EINECS
209-875-5

分子式
C₂₈H₁₈O₄

分子量
418.45

熔点
238-240°

灵敏度
Ambient temperatures.

形态
Powder

溶解性
Soluble in ethanol. Insoluble in water.

Merck
14,6389

GHS危害和防范说明

GHS符号

Hazard Statements
H315-H319-H335
Causes skin irritation.Causes serious eye irritation.May cause respiratory irritation.

Precautionary Statements
P261-P280a-P305+P351+P338-P304+P340-P405-P501a
Avoid breathing dust/fume/gas/mist/vapours/spray.Wear protective gloves and eye/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.

安全信息

危险类别
36/37/38
Irritating to eyes, respiratory system and skin.

安全等级
26-37-60
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.This material and its container must be disposed of as hazardous waste

TSCA
否