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Home> Encyclopedia >Agrochemical Intermediates>Organic Intermediate>Pharmaceutical Intermediates
Isatoic Anhydride structure
Isatoic Anhydride structure

Isatoic Anhydride

Iupac Name:1H-3,1-benzoxazine-2,4-dione
CAS No.: 118-48-9
Molecular Weight:163.1302
Modify Date.: 2022-11-29 11:06
Introduction: Intermediate for polymer curing agents, anthranilic esters, heterocyclic compd, & benzyne. View more+
1. Names and Identifiers
1.1 Name
Isatoic Anhydride
1.2 Synonyms

1,2-Dihydro-3,1-benzoxazine-2,4-dione 1H-3,1-Benzoxazine-2,4-dione 1H-Benz[d][1,3]oxazine-2,4-dione 2-(carboxyamino)-benzoicacicyclicanhydride 2,4-Dihydro-1H-3,1-benzoxazine-2,4-dione 2,4-Dioxo-1,2-dihydro-4H-3,1-benzoxazine 2H-3,1-Benzoxazine-2,4(1H)-dione 2-Hydroxy-4H-3,1-benzoxazin-4-one 3,1-Benzoxazine-2,4(1H)-dione 4H-3,1-Benzoxazin-2,4-(1H)-dion 4H-3,1-Benzoxazin-2,4(1H)-dion 4H-3,1-Benzoxazine-2,4(1H)-dione Anthranilic acid, N-carboxy-, cyclic anhydride Benzoic acid, 2-(carboxyamino)-, cyclic anhydride Benzoicacid,2-(carboxyamino)-,cyclicanhydride Benzoxazinedione Isatoic acid anhydride NSC 104662 NSC 29555

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1.3 CAS No.
118-48-9
1.4 CID
8359
1.5 EINECS(EC#)
204-255-0
1.6 Molecular Formula
C8H5NO3 (isomer)
1.7 Inchi
InChI=1S/C8H5NO3/c10-7-5-3-1-2-4-6(5)9-8(11)12-7/h1-4H,(H,9,11)
1.8 InChIkey
TXJUTRJFNRYTHH-UHFFFAOYSA-N
1.9 Canonical Smiles
C1=CC=C2C(=C1)C(=O)OC(=O)N2
1.10 Isomers Smiles
C1=CC=C2C(=C1)C(=O)OC(=O)N2
2. Properties
2.1 Density
1.52
2.1 Melting point
233℃
2.1 Boiling point
°Cat760mmHg
2.1 Refractive index
1.585
2.1 Flash Point
308℃
2.2 Precise Quality
163.02700
2.2 PSA
63.07000
2.2 logP
0.48130
2.2 Solubility
0.3g/l
2.3 VaporDensity
5.6 (vs air)
2.4 Appearance
DryPowder
2.5 Storage
Moisture Sensitive. Ambient temperatures.
2.6 Chemical Properties
BEIGE TO BROWN POWDER
2.7 Color/Form
PRISM FROM ALC OR GLACIAL ACETIC ACID; CRYSTALS FROM ALCOHOL OR DIOXANE|TAN POWDER
2.8 pKa
11.06±0.20(Predicted)
2.9 Water Solubility
MISCIBLE IN WATER, HOT ALC, AND ACETONE; INSOL IN ETHER, BENZENE, AND CHLOROFORM
2.10 Spectral Properties
MAX ABSORPTION (DIOXANE): 239 NM (LOG E= 3.95); 315 NM (LOG E= 3.58)
IR: 10143 (Sadtler Research Laboratories Prism Collection)
UV: 2746 (Sadtler Research Laboratories Spectral Collection)
NMR: 6905 (Sadtler Research Laboratories Spectral Collection)
2.11 Stability
Stable at room temperature in closed containers under normal storage and handling conditions.
2.12 StorageTemp
Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture.
3. Use and Manufacturing
3.1 Definition
A bicyclic molecule composed of a benzene ringattached at the oand mpositions to a heterocyclicring. It forms useful anthranilic acid derivatives byreaction with hydrogen.
3.2 Methods of Manufacturing
PASSING PHOSGENE INTO A SOLUTION OF ANTHRANILIC ACID IN AQUEOUS HYDROCHLORIC ACID
3.3 Purification Methods
Recrystallise it from EtOH or 95% EtOH (30mL/g) or dioxane (10mL/g) and dry it in a vacuum. [Wagner & Fegley Org Synth Coll Vol III 488 1955, Ben-Ishai & Katchalski J Am Chem Soc 74 3688 1952, UV: Zentmyer & Wagner J Org Chem 14 967 1949, Beilstein 27 II 299, 27III/IV 3330.] Isatoic Anhydride Preparation Products And Raw materials Raw materials
3.4 Usage
Intermediate for polymer curing agents, anthranilic esters, heterocyclic compd, & benzyne.
4. Safety and Handling
4.1 Symbol
GHS07;
4.1 Hazard Codes
Xi
4.1 Signal Word
Warning
4.1 Risk Statements
R36;R43
4.1 Safety Statements
S24;S26;S37
4.1 Hazard Declaration
H317; H319
4.1 RIDADR
25kgs
4.1 Caution Statement
P280; P305 + P351 + P338
4.1 Formulations/Preparations
GRADE: TECHNICAL, 96% MIN
4.2 WGK Germany
1
4.2 RTECS
DM3100000
4.2 Report

The Isatoic acid anhydride, with its cas register number 118-48-9, has its systematic name of 2H-3,1-benzoxazine-2,4(1H)-dione. This is a kind of white prismatic crystal and is soluble in ethanol and 1,4-dioxygenhexacyclo. Besides, its product categories are including aromatic carboxylic acids, amides, anilides, anhydrides & salts. What's more, it is sensitive chemically.

The characteristics of this chemical are as following: (1)ACD/LogP: 0.91; (2)ACD/LogD (pH 5.5): 0.9; (3)ACD/LogD (pH 7.4): 0.9; (4)ACD/BCF (pH 5.5): 2.87; (5)ACD/BCF (pH 7.4): 2.87; (6)ACD/KOC (pH 5.5): 73.98; (7)ACD/KOC (pH 7.4): 73.97; (8)#H bond acceptors: 4; (9)#H bond donors: 1; (10)Polar Surface Area: 46.61; (11)Index of Refraction: 1.585; (12)Molar Refractivity: 39.02 cm3; (13)Molar Volume: 116.3 cm3; (14)Polarizability: 15.47 ×10-24 cm3; (15)Surface Tension: 51.3 dyne/cm; (16)Density: 1.402 g/cm3; (17)Exact Mass 163.026943; (18)MonoIsotopic Mass 163.026943; (19)Topological Polar Surface Area 55.4; (20)Heavy Atom Count 12; (21)Complexity 226.

The production method of this chemical is as below: This chemical could be made from the reaction when o-aminobenzoic acid meets with carbonyl chloride. Firstly, dissolve the o-aminobenzoic acid in hot water and concentrated sulfuric acid, and then still the phosgene while stirring till Isatoic Anhydride separate out immediately; Secondly, when the reaction begins to exothermal, adjust the stilling rate of phosgene, while keep the temp. no higher than 50℃; Thirdly, continue to still phosgene for about 2-4h, till the absorbing speed begin to slow down; Lastly, dry the products in the air and then dry to 100℃ to get the products.

As for its usage,  it is widely applied in many ways. It could be used as the organic synthesis; It could be used as the material of pharmaceutic, pesticide and dyeing, and then it is also the important intermediate of Bentazon.

When you deal with this chemical, you should be very cautious. Firstly, this chemical may cause inflammation to the skin or other mucous, and may cause sensitisation by skin contact. Therefore, you should take the following instructions while using this chemical. Wear suitable gloves, and then avoid contact with skin. If in case of contact with eyes, rinse immediately with plenty of water and seek medical advice.   

In addition, you could convert the following datas into the molecular structure:
SMILES:O=C1OC(=O)Nc2ccccc12
InChI:InChI=1/C8H5NO3/c10-7-5-3-1-2-4-6(5)9-8(11)12-7/h1-4H,(H,9,11)
InChIKey:TXJUTRJFNRYTHH-UHFFFAOYAD

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4.3 Safety
Hazard Codes:Xi
Risk Statements:36-43
36:Irritating to the eyes
43:May cause sensitization by skin contact
Safety Statements:24-26-37
24:Avoid contact with skin
26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
37:Wear suitable gloves
WGK Germany:1
HS Code:29349990
4.4 Sensitive
Moisture Sensitive
4.5 Specification

The Isatoic acid anhydride, with its cas register number 118-48-9, has its systematic name of 2H-3,1-benzoxazine-2,4(1H)-dione. This is a kind of white prismatic crystal and is soluble in ethanol and 1,4-dioxygenhexacyclo. Besides, its product categories are including aromatic carboxylic acids, amides, anilides, anhydrides & salts. What's more, it is sensitive chemically.

The characteristics of this chemical are as following: (1)ACD/LogP: 0.91; (2)ACD/LogD (pH 5.5): 0.9; (3)ACD/LogD (pH 7.4): 0.9; (4)ACD/BCF (pH 5.5): 2.87; (5)ACD/BCF (pH 7.4): 2.87; (6)ACD/KOC (pH 5.5): 73.98; (7)ACD/KOC (pH 7.4): 73.97; (8)#H bond acceptors: 4; (9)#H bond donors: 1; (10)Polar Surface Area: 46.61; (11)Index of Refraction: 1.585; (12)Molar Refractivity: 39.02 cm3; (13)Molar Volume: 116.3 cm3; (14)Polarizability: 15.47 ×10-24 cm3; (15)Surface Tension: 51.3 dyne/cm; (16)Density: 1.402 g/cm3; (17)Exact Mass 163.026943; (18)MonoIsotopic Mass 163.026943; (19)Topological Polar Surface Area 55.4; (20)Heavy Atom Count 12; (21)Complexity 226.

The production method of this chemical is as below: This chemical could be made from the reaction when o-aminobenzoic acid meets with carbonyl chloride. Firstly, dissolve the o-aminobenzoic acid in hot water and concentrated sulfuric acid, and then still the phosgene while stirring till Isatoic Anhydride separate out immediately; Secondly, when the reaction begins to exothermal, adjust the stilling rate of phosgene, while keep the temp. no higher than 50℃; Thirdly, continue to still phosgene for about 2-4h, till the absorbing speed begin to slow down; Lastly, dry the products in the air and then dry to 100℃ to get the products.

As for its usage,  it is widely applied in many ways. It could be used as the organic synthesis; It could be used as the material of pharmaceutic, pesticide and dyeing, and then it is also the important intermediate of Bentazon.

When you deal with this chemical, you should be very cautious. Firstly, this chemical may cause inflammation to the skin or other mucous, and may cause sensitisation by skin contact. Therefore, you should take the following instructions while using this chemical. Wear suitable gloves, and then avoid contact with skin. If in case of contact with eyes, rinse immediately with plenty of water and seek medical advice.   

In addition, you could convert the following datas into the molecular structure:
SMILES:O=C1OC(=O)Nc2ccccc12
InChI:InChI=1/C8H5NO3/c10-7-5-3-1-2-4-6(5)9-8(11)12-7/h1-4H,(H,9,11)
InChIKey:TXJUTRJFNRYTHH-UHFFFAOYAD

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4.6 Toxicity
LD50 orally in Rabbit: > 6400 mg/kg LD50 dermal Rabbit > 2000 mg/kg
5. MSDS

2.Hazard identification

2.1 Classification of the substance or mixture

Eye irritation, Category 2

Skin sensitization, Category 1

2.2 GHS label elements, including precautionary statements

Pictogram(s)
Signal word

Warning

Hazard statement(s)

H319 Causes serious eye irritation

H317 May cause an allergic skin reaction

Precautionary statement(s)
Prevention

P264 Wash ... thoroughly after handling.

P280 Wear protective gloves/protective clothing/eye protection/face protection.

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

P272 Contaminated work clothing should not be allowed out of the workplace.

Response

P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

P337+P313 If eye irritation persists: Get medical advice/attention.

P302+P352 IF ON SKIN: Wash with plenty of water/...

P333+P313 If skin irritation or rash occurs: Get medical advice/attention.

P321 Specific treatment (see ... on this label).

P362+P364 Take off contaminated clothing and wash it before reuse.

Storage

none

Disposal

P501 Dispose of contents/container to ...

2.3 Other hazards which do not result in classification

none

9. Other Information
9.0 Storage Conditions
PASSING PHOSGENE INTO A SOLUTION OF ANTHRANILIC ACID IN AQUEOUS HYDROCHLORIC ACID
9.1 Mesh
Endogenous substances and drugs that inhibit or block the activity of BETA-LACTAMASES. (See all compounds classified as beta-Lactamase Inhibitors.)
9.2 Mesh Entry Terms
isatoic anhydride
9.3 Production
(1977) PROBABLY GREATER THAN 2.27X10+6 GRAMS|(1979) PROBABLY GREATER THAN 2.27X10+6 GRAMS
9.4 Formulations
GRADE: TECHNICAL, 96% MIN
9.5 Manufacturing Info
All other basic organic chemical manufacturing|2H-3,1-Benzoxazine-2,4(1H)-dione: ACTIVE|TP - indicates a substance that is the subject of a proposed TSCA section 4 test rule.|A BICYLIC MOLECULE COMPOSED OF A BENZENE RING ATTACHED @ ORTHO & META POSITIONS TO HETEROCYCLIC RING. IT FORMS USEFUL ANTHRANILIC ACID DERIVATIVES BY REACTION WITH HYDROGEN.
10. Computational chemical data
  • Molecular Weight: 163.1302g/mol
  • Molecular Formula: C8H5NO3
  • Compound Is Canonicalized: True
  • XLogP3-AA: 1
  • Exact Mass: 163.026943022
  • Monoisotopic Mass: 163.026943022
  • Complexity: 226
  • Rotatable Bond Count: 0
  • Hydrogen Bond Donor Count: 1
  • Hydrogen Bond Acceptor Count: 3
  • Topological Polar Surface Area: 55.4
  • Heavy Atom Count: 12
  • Defined Atom Stereocenter Count: 0
  • Undefined Atom Stereocenter Count: 0
  • Defined Bond Stereocenter Count: 0
  • Undefined Bond Stereocenter Count: 0
  • Isotope Atom Count: 0
  • Covalently-Bonded Unit Count: 1
  • CACTVS Substructure Key Fingerprint: AAADcYByMAAAAAAAAAAAAAAAAAAAAAAAAAA8QAAAAAAAAACxAAAAHgAQAAAADAiBmAAwyILABACIAiTSWACCAAAlAgAIiAEAbMkIJjrAtZmMMYhm1AFI6ceYyCCOAAAAAAACAAAAAAAAAAQAAAAAAAAAAA==
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