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HomeProduct name listSolvent Red 49

Solvent Red 49

Synonym(s):Solvent Red 49

  • CAS NO.:509-34-2
  • Empirical Formula: C28H30N2O3
  • Molecular Weight: 442.55
  • MDL number: MFCD00066967
  • EINECS: 208-096-8
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-11-13 19:05:53
Solvent Red 49 Structural

What is Solvent Red 49?

Chemical properties

LILAC FINE CRYSTALLINE POWDER

The Uses of Solvent Red 49

Rhodamine B base is a fluorescent biological staining dye. Rhodamine B base is also used as a laser dye, tunable around 610 nm with the fluorescence yield being temperature dependent. Dyes and metabolites, Environmental Testing

What are the applications of Application

Rhodamine B base is a fluorescent biological staining dye

Purification Methods

Major impurities are partially dealkylated compounds not removed by recrystallisation. Purify the dye by chromatography, using ethyl acetate/isopropanol/ammonia (conc)(9:7:4, RF 0.75 on Kieselgel G). It has also been crystallised from a concentrated solution in MeOH by slow addition of dry diethyl ether; or from EtOH containing a drop of conc HCl by slow addition of ten volumes of dry diethyl ether. The solid is washed with ether and air dried. The dried material has also been extracted with *benzene to remove oil-soluble material prior to recrystallisation. Store it in the dark. [Beilstein 18 II 486, 18 III/IV 8246, 19/8 V 669.]

Properties and Applications

TEST ITEMS

SPECIFICATION

APPEARANCE

PINK POWDER

SHADE

BLUISH

HEAT RESISTANCE

180 °C min

LIGHT FASTNESS

4-5

ACID RESISTANCE

4

ALKALI RESISTANCE

5

WATER RESISTANCE

5

DENSITY

1.30 g/cm 3

RESIDUE ON 80 MESH

5.0% max

WATER SOLUBLE

1.0% max

VOLATITE 105 °C

1.0% max

TINTING STRENGTH

100-105 %

Properties of Solvent Red 49

Boiling point: 553.14°C (rough estimate)
Density  1.1536 (rough estimate)
vapor pressure  0Pa at 25℃
refractive index  1.5800 (estimate)
Colour Index  45170:1
pka 5.80±0.20(Predicted)
form  Fine Crystalline Powder
color  Lilac
Water Solubility  4.83g/L at 30℃
CAS DataBase Reference 509-34-2(CAS DataBase Reference)
EPA Substance Registry System C.I. Solvent Red 49 (509-34-2)

Safety information for Solvent Red 49

Signal word Danger
Pictogram(s)
ghs
Corrosion
Corrosives
GHS05
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
H315:Skin corrosion/irritation
H318:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for Solvent Red 49

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