3-Amino-1,2,4-triazole-5-carboxylic acid

IUPAC Name: 3-Amino-1H-1,2,4-triazole-5-carboxylic acid 
Following is the structure of 1H-1,2,4-Triazole-3-carboxylicacid, 5-amino- (CAS NO.3641-13-2):
                          
Empirical Formula: C₃H₄N₄O₂
Molecular Weight: 128.0895 g/mol
EINECS: 222-868-1
Index of Refraction: 1.747
Molar Refractivity: 28.03 cm³
Molar Volume: 69 cm³
Density: 1.856 g/cm³
Flash Point: 293.9 °C
Melting point: 178-182 °C
Surface Tension: 154 dyne/cm
Enthalpy of Vaporization: 88.95 kJ/mol
Boiling Point: 562.4 °C at 760 mmHg
Vapour Pressure: 1.74E-13 mmHg at 25 °C
Product Categories of 1H-1,2,4-Triazole-3-carboxylicacid, 5-amino- (CAS NO.3641-13-2): Acids and Derivatives; Heterocycles; Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts; Organic acids; Acids & Esters; Miscellaneous Compounds; Anilines, Amides & Amines
Solubility in water of 1H-1,2,4-Triazole-3-carboxylicacid, 5-amino- (CAS NO.3641-13-2): Very soluble
Appearance of 1H-1,2,4-Triazole-3-carboxylicacid, 5-amino- (CAS NO.3641-13-2): Off-white powder
Canonical SMILES: C1(=NC(=NN1)N)C(=O)O
InChI: InChI=1S/C3H4N4O2/c4-3-5-1(2(8)9)6-7-3/h(H,8,9)(H3,4,5,6,7)
InChIKey: MVRGLMCHDCMPKD-UHFFFAOYSA-N

Hazard Codes: Xi,Xn
Risk Statements: 36/37/38-20/21/22 
R36/37/38:Irritating to eyes, respiratory system and skin. 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed.
Safety Statements: 24/25-36-26 
S24/25:Avoid contact with skin and eyes. 
S36:Wear suitable protective clothing. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
HazardClass: IRRITANT

 1H-1,2,4-Triazole-3-carboxylicacid, 5-amino- , its cas register number is 3641-13-2. It also can be called  3-Amino-1,2,4-triazole-5-carboxylic acid ; and 5-Amino-2H-1,2,4-triazole-3-carboxylic acid .
 1H-1,2,4-Triazole-3-carboxylicacid, 5-amino- (CAS NO.3641-13-2) is hazardous, so the first aid measures and others should be known. Such as: When on the skin: first, should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly, get medical aid. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Then get medical aid soon. While, it's inhaled: Remove from exposure and move to fresh air immediately. Give artificial respiration while not breathing. When breathing is difficult, give oxygen. And as soon as to get medical aid. Then you have the ingesting of the product : Wash mouth out with water, and get medical aid immediately.
 H-1,2,4-Triazole-3-carboxylicacid, 5-amino- (CAS NO.3641-13-2) could be stable under normal temperatures and pressures. It is not compatible with strong oxidizing agents. And also prevent it to broken down into hazardous decomposition products: nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen. In addition, it should keep its container closed when not in use. It also should be stored in a tightly closed container, or stored in a cool, dry, well-ventilated area away from incompatible substances.