Shanghai Nianxing Industrial Co., Ltd
China
Product Name: BBOT
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: BBOT
Price: ￥128.0/25g ￥288.0/100g
Purity: 99.0%
Stocking Period: Inquiry
Contact: Liu jia
Email: 2130147988@qq.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Fluorescent Brightener 184
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Henan Tianfu Chemical Co., Ltd.
China
Product Name: Fluorescent Brightener 184
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Stocking Period: Inquiry
Contact: Anson
Email: info@tianfuchem.com

Zhongshan Xingrui Chemical Co. , Ltd.
China
Product Name: BBOT
Price: ￥Inquiry/25kg
Purity: 99.0%
Stocking Period: Inquiry
Contact: Wang Jie
Email: 3096638339@qq.com

7128-64-5

7128-64-5 structure

7128-64-5 structure

Name: BBOT
Chemical Name: Fluorescent Brightener 184
CAS Number: 7128-64-5
Molecular Formula: C₂₆H₂₆N₂O₂S
Molecular Weight: 430.562
Catalog: Catalysts and additives Fluorescent whitening agent
Create Date: 2018-02-06 08:00:00
Modify Date: 2025-08-20 23:27:08

Name	Fluorescent Brightener 184
Synonyms	2,2'-(2,5-Thiophenediyl)bis[5-tert-butylbenzoxazole] 2,2'-thiene-2,5-diylbis(5-tert-butyl-1,3-benzoxazole) EUTEX OB-RC UVITEX 2B 2,2'-(2,5-Thienediyl)bis[5-(2-methyl-2-propanyl)-1,3-benzoxazole] FBA 184 Benzoxazole, 2,2'-(2,5-thiophenediyl)bis[5-(1,1-dimethylethyl)- bbot150 2,4-DICHLORO-5-BROMOPYRIMIDINE,COLOURLESS OIL Benzoxazole, 2,2'-(2,5-thienediyl)bis[5-(1,1-dimethylethyl)- 2,5-Bis(5-tert-butyl-benzoxazol-2-yl)thiophene 2,5-bis(5-tert-Butyl-2-benzoxazolyl)thiophene 2,5-bis-(5-tert-Butyl-2-benzoxazolyl)thiophene Fluorescent Brightener 184 B-184 UVITEX EINECS 230-426-4 OptiblancPL 2,5-bis(5-tert-butylbenzo[d]oxazol-2-yl)thiophene BBOT Benzoxazole, 2,2'-(2,5-thiophenediyl)bis[5-tert-butyl- MFCD00005774 Uvitex OB 2,5 BIS (5-TERT-BUTYL-2-BENZOXAZOLYL) THIOPHENE

Density	1.2±0.1 g/cm3
Boiling Point	531.2±45.0 °C at 760 mmHg
Melting Point	199-201 °C(lit.)
Molecular Formula	C₂₆H₂₆N₂O₂S
Molecular Weight	430.562
Flash Point	275.1±28.7 °C
Exact Mass	430.171509
PSA	80.30000
LogP	8.98
Vapour Pressure	0.0±1.3 mmHg at 25°C
Index of Refraction	1.617
Stability	Stable. Incompatible with strong oxidizing agents.

CHEMICAL IDENTIFICATION

RTECS NUMBER :: DM4888332

CHEMICAL NAME :: Benzoxazole, 2,2'-(2,5-thiophenediyl)bis(5-(1,1-dimethylethyl)-

CAS REGISTRY NUMBER :: 7128-64-5

LAST UPDATED :: 199803

DATA ITEMS CITED :: 4

MOLECULAR FORMULA :: C26-H26-N2-O2-S

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >10 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: MVCRB3 MVC-Report. (Stockholm, Sweden) No.1-2, 1972-73. Discontinued. Volume(issue)/page/year: 2,193,1973 ** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 54600 mg/kg/2Y-C

TOXIC EFFECTS :: Sense Organs and Special Senses (Eye) - effect, not otherwise specified

REFERENCE :: NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: OTS0539835

Personal Protective Equipment	Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes	Xi
Risk Phrases	36/37/38
Safety Phrases	S24/25
RIDADR	NONH for all modes of transport
WGK Germany	1
RTECS	DM4888332
HS Code	3204200000

4282-31-9 structure

4282-31-9

~%

7128-64-5 structure

7128-64-5

Literature: Helvetica Chimica Acta, , vol. 63, # 2 p. 413 - 419

3857-36-1 structure

3857-36-1

~%

7128-64-5 structure

7128-64-5

Literature: Helvetica Chimica Acta, , vol. 63, # 2 p. 413 - 419

Precursor 2
4282-31-9 3857-36-1
DownStream 0

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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