Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 6H-Dibenzo[b,d]pyran-6-one,3-nitro
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 6H-Dibenzo[b,d]pyran-6-one,3-nitro-
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

6638-64-8

6638-64-8 structure

6638-64-8 structure

Name: 6H-Dibenzo[b,d]pyran-6-one,3-nitro
Chemical Name: 7-nitro-3,4-benzocoumarin
CAS Number: 6638-64-8
Molecular Formula: C₁₃H₇NO₄
Molecular Weight: 241.19900
Create Date: 2018-07-17 15:22:50
Modify Date: 2025-08-23 13:36:28

Name	7-nitro-3,4-benzocoumarin
Synonyms	3-nitro-benzo[c]chromen-6-one 7-Nitro-9-oxaphenanthren-10-one 3-nitro-6H-dibenzo(b,d)pyran-6-one 3-Nitro-6H-benzo[c]chromen-6-one 6H-Dibenzo(B,D)pyran-6-one,3-nitro 3-NITRODIBENZOPYRANONE 3-Nitrodibenzo<b,d>pyran-6-on MFCD00004992 7-Nitro-3,4-[1,3]butadieno-2H-1-benzopyran-2-one

Density	1.457g/cm3
Boiling Point	431.5ºC at 760 mmHg
Melting Point	203-205ºC(lit.)
Molecular Formula	C₁₃H₇NO₄
Molecular Weight	241.19900
Flash Point	210.1ºC
Exact Mass	241.03800
PSA	76.03000
LogP	3.37760
Index of Refraction	1.673

CHEMICAL IDENTIFICATION

RTECS NUMBER :: HP8757700

CHEMICAL NAME :: 6H-Dibenzo(b,d)pyran-6-one, 3-nitro-

CAS REGISTRY NUMBER :: 6638-64-8

LAST UPDATED :: 199606

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C13-H7-N-O4

MOLECULAR WEIGHT :: 241.21

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

MUTATION DATA

TYPE OF TEST :: Mutation in mammalian somatic cells

TEST SYSTEM :: Human Lymphocyte

DOSE/DURATION :: 35 mg/L

REFERENCE :: MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 371,123,1996

Hazard Codes	Xn
Risk Phrases	22-36
Safety Phrases	26
RIDADR	UN 2811 6.1/PG 3
HS Code	2914700090

Precursor 3
18211-41-1 24067-17-2 610-97-9
DownStream 1
6967-04-0

HS Code	2914700090
Summary	HS: 2914700090 halogenated, sulphonated, nitrated or nitrosated derivatives of ketones and quinones, whether or not with other oxygen function Tax rebate rate:9.0% Supervision conditions:none VAT:17.0% MFN tariff:5.5% General tariff:30.0%

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