PRODUCT CODE:

131165

Bromophenol Blue PA-ACS
pH indicator 3,0 greenish yellow; 4,6 blue

---

C₁₉H₁₀Br₄O₅S

M.= 669,99	CAS [115-39-9]	EINECS 204-086-2
NC 2932 99 85

SYNONYMS: 3’,3’’,5’,5’’-Tetrabromophenolsulphonephtalein ·
PHYSICAL DATA: Light orange powder · Solubility in water at 20 ° C 3 g/l.. In alcohol 9 g/l · M.P.: 273 ºC · pK: 4,0 ·
APPLICATIONS: Analytical reagent: RFE · USP 25 · BP · Ph. Eur. IV ·F.C.C. IV ·pH indicator . " Reagent Chemicals" 8th Ed. , 196 , American Chemical Society , Washington DC. (1993) ·Adsortion indicator ·Bromophenol blue has been used for demonstration of protein amino groups, alone, or in the presence of a strong aqueous or alcoholic mercuric chloride solution according to Mazia’s technic. Lillie, 251 (1965); Davenport, 316 (1960) ·
BIBLIOGRAPHY: Merck Index 12 , 1468 13 , 1429 · Conn’s IX , 321 · Beilstein 19 , I , 649 3 , V, 458 · BRN : 61698 · ACS IX , 197 X , 213 ·

---

HAZARDOUS: RTECS: SJ 7453000 ·

---

SPECIFICATIONS:

Identity	IR p/t.
T.L.C	p/t.
MAXIMUM LIMIT OF IMPURITIES
pH transition interval:
greenish yellow	3,0
blue	4,6
Transition interval according to ACS	p/t.
Insoluble matter in C2H5OH	p/t.
Loss on drying at 110°C	5 %
Residue on ignition (as SO4)	0,5 %
Cu	0,005 %
Fe	0,005 %
Ni	0,005 %
Pb	0,005 %