Sigma-Aldrich Bromothymol Blue Indicator

Grade

ACS reagent

Quality Level

200

Agency

reag. Ph. Eur.

Form

solid

Loss

≤3% loss on drying, 110°C

Visual Transition Interval

5.8-7.6, yellow to blue

Bulk Density

450 kg/m³

Storage Temp.

2-30°C

Inchi

1S/C27H28Br2O5S/c1-13(2)17-11-20(15(5)23(28)25(17)30)27(19-9-7-8-10-22(19)35(32,33)34-27)21-12-18(14(3)4)26(31)24(29)16(21)6/h7-14,30-31H,1-6H3

Inchi Key

NUHCTOLBWMJMLX-UHFFFAOYSA-N

Related Categories

Indicators

Application

• Novel pH-responsive indicator films based on bromothymol blue-anchored chitin for shrimp freshness monitoring:This study presents innovative pH-sensitive films that incorporate bromothymol blue into chitin, designed for tracking shrimp spoilage. The development and testing of these films in real-time scenarios offer a viable method for monitoring seafood freshness, ensuring quality control in food distribution chains (Yang et al., 2023).

Analysis Note

Transition range: pH 5.8 - pH 7.6yellow - blue
Appearance of solution: passes test
Loss on drying (110 °C): ≤ 3
Transition range (according to ACS): passes test
Sensitivity test: passes test

Storage Class

11 - Combustible Solids

Wgk_Germany

WGK 3

Flash_Point_F

Not applicable

Flash_Point_C

Not applicable