Cas no 117-21-5 (3-Chlorophthalic anhydride)
3-Chlorophthalic anhydride (CAS 117-21-5) is a versatile chlorinated aromatic anhydride widely used as a key intermediate in organic synthesis. Its molecular structure features a reactive anhydride group and a chlorine substituent, enabling diverse chemical transformations such as nucleophilic substitution, condensation, and cyclization reactions. This compound is particularly valuable in the synthesis of high-performance polymers, dyes, and pharmaceutical agents due to its ability to introduce both carboxyl and chloro functionalities into target molecules. It exhibits good thermal stability and solubility in common organic solvents, facilitating its use in controlled reactions. The electron-withdrawing effect of the chlorine atom enhances reactivity in electrophilic aromatic substitutions, making it a preferred building block for complex heterocyclic systems.
3-Chlorophthalic anhydride structure
Product Name:3-Chlorophthalic anhydride
CAS No:117-21-5
MF:C8H3ClO3
MW:182.560621500015
MDL:MFCD00023107
CID:35840
PubChem ID:67014
Update Time:2025-07-02
3-Chlorophthalic anhydride Chemical and Physical Properties
Names and Identifiers
-
- 4-Chloroisobenzofuran-1,3-dione
- 3-CHLOROPHTHALIC ANHYDRIDE
- 4-Chloro-isobenzofuran-1,3-dione
- 3-Chloro-1,2-benzenedicarboxylic anhydride
- 4-Chloro-1,3-isobenzofurandione
- 3-CHLOROPHTHALIC ACID ANHYDRIDE
- Ktoyupd
- 4-chloro-2-benzofuran-1,3-dione
- 1,3-Isobenzofurandione, 4-chloro-
- 4-chloro-1,3-dihydro-2-benzofuran-1,3-dione
- 3-CHLOROPHTHALIC ANHYDRIDE 98%
- 3-CHLOROPHTHALIC ANHYDRIDE, 95+%
- VO7NXT0137
- 1,3-Isobenzofurandione, chloro-
- 4-chloranyl-2-benzofuran-1,3-dione
- NSC122937
- 3ClPA
- PubChem19464
- 3-chloropthalic anhydride
- 3-Chlorophtalic anhydride
- 3-chloro-phthalic anhydride
- C3489
- MFCD00023107
- DTXSID10151653
- Phthalic anhydride, 3-chloro-
- SCHEMBL261766
- 117-21-5
- CS-0108687
- EN300-120942
- 3-Chlorophthalicanhydride
- W-108569
- UERPUZBSSSAZJE-UHFFFAOYSA-N
- NS00009364
- 3-Chlorophthalic anhydride, tech grade
- SY001001
- AKOS002687652
- chlorophthalic anhydride
- FT-0615515
- UNII-VO7NXT0137
- 3-Chlorophthalic acid anhydride 100 microg/mL in Acetonitrile
- EC 204-179-8
- A840202
- Q4634121
- InChI=1/C8H3ClO3/c9-5-3-1-2-4-6(5)8(11)12-7(4)10/h1-3
- A803737
- NSC 122937
- NSC-122937
- FS-1337
- EINECS 204-179-8
- DB-041355
- DTXCID4074144
- 3-Chlorophthalic anhydride
-
- MDL： MFCD00023107
- Inchi： 1S/C8H3ClO3/c9-5-3-1-2-4-6(5)8(11)12-7(4)10/h1-3H
- InChI Key： UERPUZBSSSAZJE-UHFFFAOYSA-N
- SMILES： ClC1=CC=CC2C(=O)OC(C=21)=O
Computed Properties
- Exact Mass: 181.97700
- Monoisotopic Mass: 181.977072
- Isotope Atom Count: 0
- Hydrogen Bond Donor Count: 0
- Hydrogen Bond Acceptor Count: 3
- Heavy Atom Count: 12
- Rotatable Bond Count: 0
- Complexity: 239
- Covalently-Bonded Unit Count: 1
- Defined Atom Stereocenter Count: 0
- Undefined Atom Stereocenter Count : 0
- Defined Bond Stereocenter Count: 0
- Undefined Bond Stereocenter Count: 0
- Surface Charge: 0
- Tautomer Count: nothing
- XLogP3: 1.9
- Topological Polar Surface Area: 43.4
Experimental Properties
- Color/Form: Colorless sheet solid
- Density: 1.594
- Melting Point: 126.0 to 130.0 deg-C
- Boiling Point: 170°C(lit.)
- Flash Point: 152.2℃
- Refractive Index: 1.626
- PSA: 43.37000
- LogP: 1.65060
- Solubility: Not determined
3-Chlorophthalic anhydride Security Information
-
Symbol:
- Prompt：dangerous
- Signal Word：Danger
- Hazard Statement： H318
- Warning Statement： P280-P305+P351+P338+P310
- Hazard Category Code： 36/37/38
- Safety Instruction： S37/39-S26
-
Hazardous Material Identification：
- HazardClass：6.1
- PackingGroup：III
- Storage Condition：Store at room temperature
- Safety Term：S37/39-S26
- Risk Phrases：R36/37/38
3-Chlorophthalic anhydride Customs Data
- HS CODE：2942000000
- Customs Data：
China Customs Code:
2932999099Overview:
2932999099. Other heterocyclic compounds containing only oxygen heteroatoms. VAT:17.0%. Tax refund rate:13.0%. Regulatory conditions:nothing. MFN tariff:6.5%. general tariff:20.0%
Declaration elements:
Product Name, component content, use to
Summary:
2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%
3-Chlorophthalic anhydride Pricemore >>
| Related Categories | No. | Product Name | Cas No. | Purity | Specification | Price | update time | Inquiry |
|---|---|---|---|---|---|---|---|---|
| Fluorochem | 013484-1g |
3-Chlorophthalic acid anhydride |
117-21-5 | 95% | 1g |
￡10.00 | 2022-03-01 | |
| Fluorochem | 013484-5g |
3-Chlorophthalic acid anhydride |
117-21-5 | 95% | 5g |
￡13.00 | 2022-03-01 | |
| Fluorochem | 013484-25g |
3-Chlorophthalic acid anhydride |
117-21-5 | 95% | 25g |
￡33.00 | 2022-03-01 | |
| Fluorochem | 013484-100g |
3-Chlorophthalic acid anhydride |
117-21-5 | 95% | 100g |
￡111.00 | 2022-03-01 | |
| Fluorochem | 013484-500g |
3-Chlorophthalic acid anhydride |
117-21-5 | 95% | 500g |
￡365.00 | 2022-03-01 | |
| TRC | C380578-500mg |
3-Chlorophthalic Anhydride |
117-21-5 | 500mg |
$ 52.00 | 2023-09-08 | ||
| TRC | C380578-1g |
3-Chlorophthalic Anhydride |
117-21-5 | 1g |
$ 64.00 | 2023-09-08 | ||
| TRC | C380578-2.5g |
3-Chlorophthalic Anhydride |
117-21-5 | 2.5g |
$ 75.00 | 2023-09-08 | ||
| TRC | C380578-5g |
3-Chlorophthalic Anhydride |
117-21-5 | 5g |
$87.00 | 2023-05-18 | ||
| SHANG HAI MAI KE LIN SHENG HUA Technology Co., Ltd. | C858490-100g |
3-Chlorophthalic Anhydride |
117-21-5 | 95% | 100g |
316.00 | 2021-05-17 |
3-Chlorophthalic anhydride Suppliers
Tiancheng Chemical (Jiangsu) Co., Ltd
Gold Member
Audited Supplier
(CAS:117-21-5)3-CHLOROPHTHALIC ANHYDRIDE
Order Number:LE7035;LE19173
Stock Status:in Stock
Quantity:25KG,200KG,1000KG
Purity:99%
Pricing Information Last Updated:Friday, 20 June 2025 11:50
Price ($):discuss personally
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ASIACHEM I&E (JIANGSU) CO., LTD
Gold Member
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(CAS:117-21-5)3-Chlorophthalic anhydride
Order Number:AC091
Stock Status:in Stock
Quantity:25kg
Purity:98%
Pricing Information Last Updated:Monday, 18 August 2025 09:27
Price ($):discuss personally
Email:[email protected]
TAIXING JOXIN BIO-TEC CO.,LTD.
Gold Member
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(CAS:117-21-5)3-CHLOROPHTHALIC ANHYDRIDE
Order Number:JOX-073
Stock Status:in Stock
Quantity:25KG
Purity:99%
Pricing Information Last Updated:Tuesday, 15 July 2025 15:40
Price ($):
Email:[email protected]
3-Chlorophthalic anhydride Related Literature
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Esmeralda Bukuroshi,Siena Wong,Thanmayee Mudigonda,Kyle Nova,Antoine Dumont,Devon Holst,Zheng-Hong Lu,Timothy P. Bender Mol. Syst. Des. Eng. 2021 6 308
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2. An investigation of the Wittig reaction between a series of monosubstituted phthalic anhydrides and ethoxycarbonylmethylidenetriphenylphosphoraneAhmad Allahdad,David W. Knight J. Chem. Soc. Perkin Trans. 1 1982 1855
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Nafeesa Mushtaq,Guofei Chen,Lala Rukh Sidra,Yang Liu,Xingzhong Fang Polym. Chem. 2016 7 7427
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Li Zhang,Beichen Zhang,Teng Jiang,Tao Lu,Qingfa Zhou Org. Chem. Front. 2017 4 119
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5. 103. The chemistry of 1-azanthraquinone. Part II. Sulphonation of 1-azanthraquinoneG. R. Clemo,N. Legg J. Chem. Soc. 1947 539
Related Categories
- Solvents and Organic Chemicals Organic Compounds Organoheterocyclic compounds Benzofurans Phthalic anhydrides
- Solvents and Organic Chemicals Organic Compounds Organoheterocyclic compounds Benzofurans Benzofuranones Phthalic anhydrides
- Solvents and Organic Chemicals Organic Compounds Acids/Esters
- Solvents and Organic Chemicals Organic Compounds Hydrocarbons
- Pharmaceutical and Biochemical Products Pharmaceutical Intermediates
117-21-5 (3-Chlorophthalic anhydride) Related Products
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- 61630-88-4(1,3-Isobenzofurandione, 4,5,6,7-tetrachloro-, polymer with 1,2-ethanediol and 1,3-isobenzofurandione)
- 4466-59-5(4,7-dichloroisobenzofuran-1,3-dione)
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- 52043-45-5(1(3H)-Isobenzofuranone, 4,6-dichloro-)
Recommended suppliers
Tiancheng Chemical (Jiangsu) Co., Ltd
(CAS:117-21-5)3-CHLOROPHTHALIC ANHYDRIDE
Purity:99%/99%
Quantity:25KG,200KG,1000KG/25KG,200KG,1000KG
Price ($):Inquiry/Inquiry
ASIACHEM I&E (JIANGSU) CO., LTD
(CAS:117-21-5)3-Chlorophthalic anhydride
Purity:98%
Quantity:25kg
Price ($):Inquiry