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Bromocresol Green IND Grade Reagent

Cas Number:76-60-8
Formula: C21H14Br4O5S
Molar Mass:698.01
EC Number:200-972-8

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Model:
IND
Brand:
LABOR
Code:
405433125

Bromocresol Green IND Grade Reagent

Cas Number:76-60-8

Formula: C₂₁H₁₄Br₄O₅S

Molar Mass:698.01

EC Number:200-972-8

Properties:

White or yellowish crystals. It is soluble in ethanol, ether and ethyl acetate and benzene, slightly soluble in water. The melting point is 218 ~ 219 ° C. The maximum absorption wavelength is 423 nm.

Usage:

Acid-base indicator, pH : 3.8 (yellow-green) ~ 5.4 (blue).

Packing:

500g/25kg

Bromocresol Green 3' 3'' 5' 5''-Tetrabromo-m-cresolsulfonephthalein IND Grade Reagent

Item of Analysis	Standard
pH discoloration domain	3.8(Yellow green)~5.4(Blue)
Greatest absorption wavelength,λ₁( pH3.8)/nm	440~445
Greatest absorption wavelength,λ₂(pH5.4)/nm	615~618
Mass absorption coefficient,α₁(λ₁,pH3.8 dry sample),L/(cm·g）	24~28
Mass absorption coefficient,α₂(λ₂,pH4.5 dry sample),L/(cm·g）	53~58
Solubility in ethanol	to pass test
Loss on drying,%	3.0 max
Residue on ignition(as SO₄),%	0.25 max

Item of Analysis	Standard
pH discoloration domain	3.8(Yellow green)~5.4(Blue)
Greatest absorption wavelength,λ₁( pH3.8)/nm	440~445
Greatest absorption wavelength,λ₂(pH5.4)/nm	615~618
Mass absorption coefficient,α₁(λ₁,pH3.8 dry sample),L/(cm·g）	24~28
Mass absorption coefficient,α₂(λ₂,pH4.5 dry sample),L/(cm·g）	53~58
Solubility in ethanol	to pass test
Loss on drying,%	3.0 max
Residue on ignition(as SO₄),%	0.25 max

Bromocresol Green IND Grade Reagent

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