Bromocresol green sodium salt

Molecular Structure：

MDL：
--MFCD00148898

Molecular Formula：
C21H13Br4NaO5S

Molecular Weight：
720.00

Alias：
溴甲酚绿钠盐 Bromocresol Blue Sodium Salt Sodium Bromocresol Green 3′,3″,5′,5″-Tetrabromo-m-cresolsulfonphthalein sodium salt

Product order：

Name	Specifications	Packing	Price	Delivery
Bromocresol green sodium salt	ACS reagent, 90 %	25g	RMB 308	Consulting service
Bromocresol green sodium salt	ACS reagent, 90 %	5g	RMB 107.8	Consulting service
Bromocresol green sodium salt	98%,高纯级	25g	RMB 371.8	Consulting service
Bromocresol green sodium salt	98%,高纯级	5g	RMB 118.8	Consulting service
Bromocresol green sodium salt	IND	25g	RMB 140.8	Consulting service

Character：
熔点：230℃

Quality Standard：

   项目（name）                     指示剂（Ind）
                              (indicator grade）
水溶解试验                        合格
PH变色范围                       3.8(黄色)-5.4(蓝色)
灼烧残渣(以硫酸盐计)             8.5-11.5%

品级Grade                               高纯级
                                       (High pure)
外观Appearance                          暗绿色至棕色、黑色粉末或结晶
红外光谱鉴别Infrared spectrometry       Conforms
纯度Purity                              98.0 to 105.0 % (以干基计)
pH变色域Transition interval:            pH 3.8 (yellow) to pH 5.4 (blue)
灵敏性试验Sensitiveness test            Pass

品级Grade                                ACS级
                                     (ACS reagent, 90 %)
外观Appearance                          暗绿色至棕色、黑色粉末或结晶
红外光谱鉴别Infrared spectrometry       Conforms
纯度Purity                              ≥90.0% (HPLC)
λ                                       614 - 618 nm
                                        c = 0.01g/L, Water
消光系数Extinction Coefficient          ≥25000
λ                                       394 - 406 nm
消光系数Extinction Coefficient          ≥8000
λ                                       306 - 310 nm
消光系数Extinction Coefficient          ≥10000
pH变色域Transition interval:            pH 3.8 (yellow) to pH 5.2 (blue)
Visual Interval                         Pass
                                        pH 3.8 = Yellow
Visual Interval                         Pass
                                        pH 4.5 = Green
Visual Interval                         Pass
                                        pH 5.4 = Blue
不溶物Insoluble Matter.                c = 0.1g/100ml; Water

Storage：

用途 PH指示剂(pH 3.8-5.4)。