860891

Bromocresol Purple sodium salt

indicator grade, Dye content 90 %

• Sinonimo/i: 5′,5″-Dibromo-o-cresolsulfonphthalein sodium salt
• Formula empirica (notazione di Hill): C₂₁H₁₅Br₂NaO₅S
• Numero CAS: 62625-30-3
• Peso molecolare: 562.20
• Numero CE: 263-655-3
• Numero MDL: MFCD00148896
• Codice UNSPSC: 12171500
• ID PubChem: 24888522
• NACRES: NA.47

Proprietà

• Grado: indicator grade
• Livello qualitativo: 200
• Stato: powder
• Composizione: Dye content, 90%
• tecniche: titration: suitable
• Colore: brown to very dark brown, to Very Dark Red
• visual transition interval: 5.2-6.8, yellow to purple
• Punto di fusione: 255 °C (dec.) (lit.)
• λmax: 379 nm; 585 nm (2nd)
• ε (coefficiente d’estinzione): ≥47000 at 587-591 nm in 0.1 M NaOH; ≥7000 at 375-381 nm in 0.1 M NaOH
• applicazioni: diagnostic assay manufacturing; hematology; histology
• Temperatura di conservazione: room temp
• Stringa SMILE: [Na+].Cc1cc(cc(Br)c1O)C2(OS(=O)(=O)c3ccccc23)c4cc(C)c([O-])c(Br)c4
• InChI: 1S/C21H16Br2O5S.Na/c1-11-7-13(9-16(22)19(11)24)21(14-8-12(2)20(25)17(23)10-14)15-5-3-4-6-18(15)29(26,27)28-21;/h3-10,24-25H,1-2H3;/q;+1/p-1; WNOIORUCCYNQPE-UHFFFAOYSA-M

Descrizione

Descrizione generale

Bromocresol Purple, also known as dibromo-o-cresolsulfonphthalein, is an acidic dye and belongs to the phthalein and sulphonphthalein dyes group. The dye color changes from yellow to violet at pH 5.2-6.8. The monosodium salt of the dye is 8% soluble in water and 2% in ethanol. Bromocresol Purple, under alkaline conditions, forms a hydrophilic, moderately sized dianion that is purple.

Applicazioni

Bromocresol Purple is widely used as a vital stain to trace fluid diffusion in the lymphatic system. In addition, the dye is suitable to differentiate dead or live yeast cells. As a pH indicator, Bromocresol Purple is used in microbial culture media, both broth, and agar. In analytical experiments, e.g., to stain carbonic anhydrase isoenzyme on cellulose acetate electrophoresis membranes, bromocresol purple is used.

Informazioni sulla sicurezza

• Pittogrammi: GHS07
• Avvertenze: Warning
• Indicazioni di pericolo: H315,H319,H335
• Consigli di prudenza: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Classi di pericolo: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• Organi bersaglio: Respiratory system
• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 3
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable
• Dispositivi di protezione individuale: dust mask type N95 (US), Eyeshields, Gloves