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Kaiyuan Shenxin Chemical Co.,Ltd.

23 YRS

Liaoning, China

CNY 0.5 Million

Less than 50 people

Main Products: 1,10-Phenanthroline Monohydrate / Bromocresol Green / 1,8-Dihydroxynaphthylene-3,6-Disulfonic Acid / 4-Aminoazobenzene / 2,4-Dinitrophenylhydrazine

Liaoning, China

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Bromocresol Green / CAS 76-60-8

Loss on drying ≤3.0%

OVERVIEW

Packaging

25 KG/Fibre Drum

Lead Time

14-30 days

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DESCRIPTION

Bromocresol Green

Product Name: Bromocresol Green

Cas No.：76-60-8

Molecular formula:C21H14Br4O5S

Molecular weight: 698.01

Appearance: Light yellow or light gray powder

Product details:

Chemical properties: light yellow or light gray powder, insoluble in water, soluble in ethanol and diluted solution; The precipitates from acetic acid are fine yellow crystals. Slightly soluble in water, soluble in ethanol, ether, ethyl acetate and benzene. It is very sensitive to alkali and shows a special blue-green color in case of alkaline aqueous solution. The melting point is 225 ℃, the density is 0.79 g/mL at 20℃, and the flash point is 12℃.

Application: 1. Indicator: yellow when pH = 3.8, blue-green when pH = 5.4, and obvious color change when pH = 4.5. 2. Cell stain. 3. Used as acid-base indicator.

Quality standard:

Items	Standard
PH discoloration domain	3.8（Yellow green）----5.4（Blue）
Maximum absorption wavelength（nm） λ1（PH 3.8） λ2 (PH 5.4)	440~445 615~618
Mass absorption coefficient，L/cm·g α1(λ1PH 3.8,Dry sample) α2（λ2PH 5.4,Dry sample）	24~28 53~58
Ethanol dissolution test	Qualified
Burning residue(sulfate)	≤0.25
Loss on drying	≤3.0

Typical Properties

Usage: 1. Indicator: yellow when pH = 3.8, blue-green when pH = 5.4, and obvious color change when pH = 4.5. 2. Cell stain. 3. Used as acid-base indicator.

CAS No.

76-60-8

Formula

C21H14Br4O5S

Molecular Mass

698.01400

Exact Mass

693.73000

PSA

92.21000

Logp

7.85620

IUPAC

2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxy-2-methylphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]-3-methylphenol

SMILES

CC1=C(C(=C(C=C1C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C(=C4C)Br)O)Br)Br)O)Br

Matter Classification

organic

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