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Benzoic acid, 2-[(2,4,6-trinitrophenyl)amino]-, also known as Trinitrobenzenesulfonic acid or TNBS, is a chemical compound with the molecular formula C13H8N4O7S. It is a yellow crystalline solid that is soluble in water and organic solvents. TNBS is commonly used as a reagent in various analytical techniques, particularly for the determination of amino acids, peptides, and proteins. It reacts with primary amines to form a yellow-colored product, which can be used for quantitative analysis. Additionally, TNBS has applications in the synthesis of dyes, pharmaceuticals, and other organic compounds. Due to its reactivity and potential hazards, it is important to handle TNBS with caution and follow proper safety protocols.

7221-21-8

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Basic information
1. Product Name: Benzoic acid, 2-[(2,4,6-trinitrophenyl)amino]-
2. Synonyms: 2'.4'.6'-Trinitro-diphenylamin-carbonsaeure-(2);o-(2,4,6-Trinitroanilino)benzoic acid;2-Pikrylamino-benzoesaeure;N-Picryl-anthranilsaeure;Benzoic acid,2-[(2,4,6-trinitrophenyl)amino];N-picryl-anthranilic acid;o-picraminobenzoic acid;
3. CAS NO:7221-21-8
4. Molecular Formula: C13H8N4O8
5. Molecular Weight: 348.229
6. EINECS: N/A
7. Product Categories: N/A
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: N/A
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: Benzoic acid, 2-[(2,4,6-trinitrophenyl)amino]-(CAS DataBase Reference)
10. NIST Chemistry Reference: Benzoic acid, 2-[(2,4,6-trinitrophenyl)amino]-(7221-21-8)
11. EPA Substance Registry System: Benzoic acid, 2-[(2,4,6-trinitrophenyl)amino]-(7221-21-8)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 7221-21-8(Hazardous Substances Data)

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7221-21-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 7221-21-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,2,2 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 7221-21:
(6*7)+(5*2)+(4*2)+(3*1)+(2*2)+(1*1)=68
68 % 10 = 8
So 7221-21-8 is a valid CAS Registry Number.

7221-21-8SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name	2-(2,4,6-trinitroanilino)benzoic acid

1.2 Other means of identification

Product number	-
Other names	N-picryl-anthranilic acid

1.3 Recommended use of the chemical and restrictions on use

Identified uses	For industry use only.
Uses advised against	no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number	-
Service hours	Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:7221-21-8 SDS

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