Uses
ChemicalBook > CAS DataBase List > 3-Amino-5-mercapto-1,2,4-triazole

3-Amino-5-mercapto-1,2,4-triazole

Uses
Product Name
3-Amino-5-mercapto-1,2,4-triazole
CAS No.
16691-43-3
Chemical Name
3-Amino-5-mercapto-1,2,4-triazole
Synonyms
3-Amino-1H-1,2,4-triazole-5-thiol;3-AMINO-1,2,4-TRIAZOLE-5-THIOL;5-AMINO-1H-1,2,4-TRIAZOLE-3-THIOL;iminothiourazole;5-AMINO-4H-1,2,4-TRIAZOLE-3-THIOL;3-ATM;ent61388;3-Amino-5-mercapto-1;3-Imino-5-thiourazole;LABOTEST-BB LT00007791
CBNumber
CB7178414
Molecular Formula
C2H4N4S
Formula Weight
116.14
MOL File
16691-43-3.mol
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3-Amino-5-mercapto-1,2,4-triazole Property

Melting point:
>300 °C(lit.)
Boiling point:
201.2±23.0 °C(Predicted)
Density 
1.420 (estimate)
refractive index 
1.5605 (estimate)
storage temp. 
Keep in dark place,Inert atmosphere,Room temperature
solubility 
water: soluble25mg/mL, clear, faintly yellow to yellow
pka
12.57±0.20(Predicted)
form 
Crystalline Powder
color 
White to light beige
Water Solubility 
SOLUBLE IN HOT WATER
BRN 
112404
InChI
InChI=1S/C2H4N4S/c3-1-4-2(7)6-5-1/h(H4,3,4,5,6,7)
InChIKey
WZUUZPAYWFIBDF-UHFFFAOYSA-N
SMILES
N1C(N)=NC(=S)N1
LogP
0.347 (est)
CAS DataBase Reference
16691-43-3(CAS DataBase Reference)
EPA Substance Registry System
3H-1,2,4-Triazole-3-thione, 5-amino-1,2-dihydro- (16691-43-3)
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Safety

Hazard Codes 
Xi,Xn,F
Risk Statements 
36/37/38-22-11-20/21/22
Safety Statements 
26-36-36/37/39-16
WGK Germany 
3
RTECS 
XZ5357500
13
TSCA 
Yes
HS Code 
29339990
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
140260
Product name
3-Amino-1,2,4-triazole-5-thiol
Purity
95%
Packaging
10g
Price
$94.2
Updated
2023/01/07
TCI Chemical
Product number
A1455
Product name
3-Amino-5-mercapto-1,2,4-triazole
Purity
>98.0%(T)
Packaging
5g
Price
$17
Updated
2024/03/01
TCI Chemical
Product number
A1455
Product name
3-Amino-5-mercapto-1,2,4-triazole
Purity
>98.0%(T)
Packaging
25g
Price
$48
Updated
2024/03/01
Alfa Aesar
Product number
A15242
Product name
3-Amino-5-mercapto-1,2,4-triazole, 98+%
Packaging
5g
Price
$28.65
Updated
2024/03/01
Alfa Aesar
Product number
A15242
Product name
3-Amino-5-mercapto-1,2,4-triazole, 98+%
Packaging
25g
Price
$99.65
Updated
2024/03/01
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3-Amino-5-mercapto-1,2,4-triazole Chemical Properties,Usage,Production

Uses

3-Amino-5-mercapto-1,2,4-triazole is used as a corrosion inhibitor. It can also be used as a reactant in the synthesis of triazole derivatives.

Chemical Properties

white to light beige crystalline powder

Uses

3-Amino-1,2,4-triazole-5-thiol was used to study the inhibition of corrosion of iron in 3.5% NaCl solutions by low concentrations of ATT and 1,1′-thiocarbonyldiimidazole. It was used to prepare surface-enhanced Raman scattering based pH nano- and microsensor using silver nanoparticles.

Uses

3-Amino-5-mercapto-1,2,4-triazole is used as a corrosion inhibitor. It can also be used as a reactant in the synthesis of triazole derivatives.

Synthesis Reference(s)

Journal of Heterocyclic Chemistry, 26, p. 355, 1989 DOI: 10.1002/jhet.5570260216

General Description

3-Amino-1,2,4-triazole-5-thiol inhibits corrosion of copper in aerated acidic chloride pickling solutions.

Purification Methods

Recrystallise the triazole from H2O and dry it in vacuo. The acetyl derivative has m 325o(dec) after recrystallisation from H2O. [Beilstein 26 III/IV 1351.] It has also been recrystallised from EtOH/H2O (3:1, 1g in 50 mL, 50% recovery), m 300-302o (dec subject to heating rate), ( max 263nm, log 4.12). The S-benzyl derivative, when crystallised from *C6H6/EtOH (20:1), or CHCl3/Et2O has m 109-111o [Godfrey & Kruzer J Chem Soc 3437 1960, Beilstein 26 III/IV 1351.]

Toxics Screening Level

The initial threshold screening level (ITSL) for 3-amino-5-mercapto-1 ,2,4-triazole is 7μg/m3 based on an annual averaging time.

3-Amino-5-mercapto-1,2,4-triazole Preparation Products And Raw materials

Raw materials

Preparation Products

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3-Amino-5-mercapto-1,2,4-triazole Suppliers

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View Lastest Price from 3-Amino-5-mercapto-1,2,4-triazole manufacturers

Jinan Finer Chemical Co., Ltd
Product
3-Amino-5-mercapto-1,2,4-triazole 16691-43-3
Price
US $0.00/Kg/Drum
Min. Order
1KG
Purity
99%
Supply Ability
200mt/year
Release date
2021-11-12
WUHAN FORTUNA CHEMICAL CO., LTD
Product
3-Amino-5-mercapto-1,2,4-triazole 16691-43-3
Price
US $0.00/Kg/Drum
Min. Order
1KG
Purity
99%min
Supply Ability
10000kg
Release date
2021-11-03
Henan Aochuang Chemical Co.,Ltd.
Product
3-Amino-5-mercapto-1,2,4-triazole 16691-43-3
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
98%
Supply Ability
1Ton
Release date
2022-10-17

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