Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Benzo[d]isoxazol-3-ol
Price: Check
Purity: 97.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: Benzo[d]isoxazol-3-ol
Price: ￥468.0/1g
Purity: 95.0%
Stocking Period: 3 Day
Contact: Liu jia
Email: 2130147988@qq.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Benzo[d]isoxazol-3-ol
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

21725-69-9

21725-69-9 structure

21725-69-9 structure

Name: Benzo[d]isoxazol-3-ol
Chemical Name: 1,2-benzoxazol-3-one
CAS Number: 21725-69-9
Molecular Formula: C₇H₅NO₂
Molecular Weight: 135.120
Create Date: 2018-06-18 16:55:21
Modify Date: 2025-08-26 12:38:52

Name	1,2-benzoxazol-3-one
Synonyms	3-Hydroxybenzisoxazole 1,2-Benzisoxazol-3(2H)-one 3-Hydroxy-1,2-benzisoxazole 1,2-benzisoxazol-3-ol 1,2-Benzisoxazol-3-ol 1,2-Benzisoxazolin-3-one 3-Hydroxy-1,2-benzisoxazole Benzo[d]isoxazol-3-ol Benzo[d]isoxazol-3-ol 1,2-benzoxazol-3-ol 1,2-Benzoxazol-3(2H)-one MFCD00125030 1,2-Benzisoxazolin-3-one

Density	1.4±0.1 g/cm3
Boiling Point	299.9±13.0 °C at 760 mmHg
Melting Point	140-142ºC
Molecular Formula	C₇H₅NO₂
Molecular Weight	135.120
Flash Point	135.2±19.8 °C
Exact Mass	135.032028
PSA	46.26000
LogP	0.89
Vapour Pressure	0.0±0.7 mmHg at 25°C
Index of Refraction	1.664

CHEMICAL IDENTIFICATION

RTECS NUMBER :: DE4933500

CHEMICAL NAME :: 1,2-Benzisoxazol-3(2H)-one

CAS REGISTRY NUMBER :: 21725-69-9

LAST UPDATED :: 198702

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C7-H5-N-O2

MOLECULAR WEIGHT :: 135.13

WISWESSER LINE NOTATION :: T56 BOMVJ

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 :: 2650 mg/kg

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

REFERENCE :: PLRCAT Pharmacological Research Communications. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1969- Volume(issue)/page/year: 3,385,1971

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

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 3100 mg/kg

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

REFERENCE :: PLRCAT Pharmacological Research Communications. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1969- Volume(issue)/page/year: 3,385,1971

Hazard Codes	Xi: Irritant;
Risk Phrases	R36/37/38
Safety Phrases	26-36/37/39
RTECS	DE4933500
HS Code	2934999090

Precursor 5
89-73-6 16063-88-0 69-72-7 50-78-2
5538-51-2
DownStream 10
26384-70-3 87691-89-2 128520-86-5 36238-80-9
24603-63-2 16263-52-8 73498-28-9 776-70-5
65685-50-9 66570-86-3

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

The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.