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

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

CAS No.: 16691-43-3

Chemical Name:: 3-Amino-5-mercapto-1,2,4-triazole

Synonyms: 3-AMINO-1,2,4-TRIAZOLE-5-THIOL;3-Amino-1H-1,2,4-triazole-5-thiol;iminothiourazole;5-AMINO-1H-1,2,4-TRIAZOLE-3-THIOL;3-Imino-5-thiourazole;5-AMINO-4H-1,2,4-TRIAZOLE-3-THIOL;4-triazolidine-3-thione,5-imino-2;3-ATM;ent61388;3-Amino-5-mercapto-1

CBNumber:: CB7178414

Molecular Formula:: C2H4N4S

Molecular Weight:: 116.14

MDL Number:: MFCD00005231

MOL File:: 16691-43-3.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-05-28 04:31:05

Product description	Number	Pack Size	Price
3-Amino-1,2,4-triazole-5-thiol 95%	140260	10g	$94.2
3-Amino-5-mercapto-1,2,4-triazole >98.0%(T)	A1455	5g	$20
3-Amino-5-mercapto-1,2,4-triazole >98.0%(T)	A1455	25g	$48
3-Amino-1,2,4-triazole-5-thiol 98+% (HPLC) ≥98%(HPLC)	231527	5g	$156
3-Amino-1,2,4-triazole-5-thiol 98+% (HPLC) ≥98%(HPLC)	231527	100g	$247
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3-Amino-5-mercapto-1,2,4-triazole Properties

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)
FDA UNII	353F2D8L1Z
EPA Substance Registry System	3H-1,2,4-Triazole-3-thione, 5-amino-1,2-dihydro- (16691-43-3)
UNSPSC Code	12352100

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS07

Signal word

Warning

Hazard statements

H302+H312+H332-H315-H319-H335

Precautionary statements

P261-P264-P270-P271-P280-P301+P312+P330-P302+P352+P312+P362+P364-P304+P340+P312-P305+P351+P338+P337+P313-P501-P280g-P305+P351+P338

PPE

dust mask type N95 (US), Eyeshields, Gloves

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

RTECS

XZ5357500

TSCA

TSCA listed

HS Code

29339990

Storage Class

11 - Combustible Solids

REACH Registrations

Active

NFPA 704

	1
2		0

3-Amino-5-mercapto-1,2,4-triazole price More Price(58)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	140260	3-Amino-1,2,4-triazole-5-thiol 95%	16691-43-3	10g	$94.2	2023-01-07	Buy
TCI Chemical	A1455	3-Amino-5-mercapto-1,2,4-triazole >98.0%(T)	16691-43-3	5g	$20	2026-04-30	Buy
TCI Chemical	A1455	3-Amino-5-mercapto-1,2,4-triazole >98.0%(T)	16691-43-3	25g	$48	2026-04-30	Buy
Usbiological	231527	3-Amino-1,2,4-triazole-5-thiol 98+% (HPLC) ≥98%(HPLC)		5g	$156	2026-06-03	Buy
Usbiological	231527	3-Amino-1,2,4-triazole-5-thiol 98+% (HPLC) ≥98%(HPLC)		100g	$247	2026-06-03	Buy

Product number	Packaging	Price	Buy
140260	10g	$94.2	Buy
A1455	5g	$20	Buy
A1455	25g	$48	Buy
231527	5g	$156	Buy
231527	100g	$247	Buy

3-Amino-5-mercapto-1,2,4-triazole Chemical Properties,Uses,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-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.

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.

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 synthesis

Synthesis of 3-Amino-5-mercapto-1,2,4-triazole from Hydrazodicarbothioamide

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

Raw materials

Hydrazodicarbothioamide

Preparation Products

Diniconazole CAFENSTROLE Nefazodone Tazobactam acid Letrozole

3-[(4-methylphenyl)methylsulfanyl]-1H-1,2,4-triazol-5-amine

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

Global( 462)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Shaoxing Fangxiao Chemical Co., LTD	+86-13456999252 +86-13868192239	kenny@fangxiaochem.com	China	50	58
Zhejiang Kinso Technology Co., LTD.	+86-571-56950601; +86-19857958369	sales@kinsopharma.com	China	51	58
Hebei Chuanghai Biotechnology Co,.LTD	+86-86-13131129325	sales1@chuanghaibio.com	China	5218	58
Hebei Chuanghai Biotechnology Co., Ltd	+86-17732866630	mina@chuanghaibio.com	China	18126	58
Hebei Zhuanglai Chemical Trading Co Ltd	+86-16264648883	niki@zlchemi.com	China	7245	58
Shanghai Daken Advanced Materials Co.,Ltd	+86-2158073036	info@dakenam.com	China	14026	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21585	55
ATK CHEMICAL COMPANY LIMITED	+undefined-21-51877795	ivan@atkchemical.com	China	33024	60
career henan chemical co	+86-0371-86658258	sales@coreychem.com	China	29812	58
Jinan Finer Chemical Co., Ltd	+86-531-88989536 +86-15508631887	sales@finerchem.com	China	2950	58

Supplier	Advantage
Shaoxing Fangxiao Chemical Co., LTD	58
Zhejiang Kinso Technology Co., LTD.	58
Hebei Chuanghai Biotechnology Co,.LTD	58
Hebei Chuanghai Biotechnology Co., Ltd	58
Hebei Zhuanglai Chemical Trading Co Ltd	58
Shanghai Daken Advanced Materials Co.,Ltd	58
Henan Tianfu Chemical Co.,Ltd.	55
ATK CHEMICAL COMPANY LIMITED	60
career henan chemical co	58
Jinan Finer Chemical Co., Ltd	58

3-Amino-5-mercapto-1,2,4-triazole: Corrosion Inhibition, Sensitization Risks, and Analytical Methods
3-Amino-5-mercapto-1,2,4-triazole is valued for its corrosion inhibition properties and industrial applications but poses safe....
Jun 11，2025

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

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-08-03	3-Amino-5-mercapto-1,2,4-triazole 16691-43-3		1KG	99%	200mt/year	Jinan Finer Chemical Co., Ltd
2026-08-03	3-Amino-5-mercapto-1,2,4-triazole 16691-43-3		1KG	99%min	10000kg	WUHAN FORTUNA CHEMICAL CO., LTD
2026-05-28	3-Amino-5-Mercapto-1, 2, 4-Triazolee 16691-43-3	$10.00	1KG	98%	10 ton	Hebei Chuanghai Biotechnology Co,.LTD

3-Amino-5-mercapto-1,2,4-triazole
16691-43-3
$0.00
99%
Jinan Finer Chemical Co., Ltd

3-Amino-5-mercapto-1,2,4-triazole
16691-43-3
$0.00
99%min
WUHAN FORTUNA CHEMICAL CO., LTD

3-Amino-5-Mercapto-1, 2, 4-Triazolee
16691-43-3
$10.00
98%
Hebei Chuanghai Biotechnology Co,.LTD

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

3-Amino-5-mercapto-1,2,4-triazole(16691-43-3)MS 3-Amino-5-mercapto-1,2,4-triazole(16691-43-3)¹HNMR 3-Amino-5-mercapto-1,2,4-triazole(16691-43-3)¹³CNMR 3-Amino-5-mercapto-1,2,4-triazole(16691-43-3)IR1 3-Amino-5-mercapto-1,2,4-triazole(16691-43-3)IR2 3-Amino-5-mercapto-1,2,4-triazole(16691-43-3)Raman

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3-AMINO-5-MERCAPTO-1,2,4-TRIAZOLE 3-AMINO-5-MERCAPTO-1H-1,2,4-TRIAZOLE 3-AMINO-4H-1,2,4-TRIAZOLE-5-THIOL 5-MERCAPTO-3-AMINO, 1,2,4-TRIAZOLE 3H-1,2,4-Triazole-3-thione, 5-amino-1,2-dihydro- 3H-1,2,4-Triazole-3-thione,5-amino-1,2-dihydro-(9CI) LABOTEST-BB LT00007791 3-Amino-5-mercapto-1,2,4-triazole,tech. 3-Amino-5-mercapto-1,2,4-triazole, 98+% 5-Amino-1,2-dihydro-1,2,4-triazole-3-thione 1,2-dihydro-5-amino-3h-1,2,4-triazole-3-thione 2,4-Triazolidine-3-thione,5-imino-1 4-triazole-3-thione,1,2-dihydro-5-amino-3h-2 4-triazole-3-thione,5-amino-1,2-dihydro-3h-2 5-amino-s-triazole-3-thio 5-imino-2-triazolidine-3-thione ent61388 5-Amino-1H-1,2,4-triazole-3(2H)-thione 5-Amino-2H-1,2,4-triazole-3-thiol 3-Amino-5-mercapto-1,2,4-triazole,99% 3-Amino-5-mercapto-1 5-Amino-4H-1,2,4-triazole-3-thiol , Tech. 3-AMINO-5-MERCAPTO-1,2,4-TRIAZOLE FOR SY 3-ATM 3--5--1,2,4- threeaMinoMercaptotriazole 3- aMino-5- Mercaptotriazole-1,2,4-three 5-aMino-3H-1,2,4-triazole-3-thione 3-AMino-1,2,4-triazole-5-thiol 95% 5-imino-1 4-Triazole-3-thione 5-amino-1,2-dihydro-3h-2 4-Triazolidine-3-thione 3-Amino-1,2,4-triazole-5-thiol≥ 98% (HPLC) 3-Amino-5-mercapto-1,2,4-triazole for synthesis 4-triazolidine-3-thione 3-Amino-5-mercapto-1,2,4-triazole > 3-Amino-5-Mercapto-1, 2, 4-Triazolee Supply 3-Amino-5-Mercapto-1, 2, 4-Triazole CAS: 16691-43-3, 99% Assay TIANFUCHEM--16691-43-3--3-Amino-5-mercapto-1,2,4-triazole factory price 5-AMINO-4H-1,2,4-TRIAZOLE-3-THIOL 3-Amino-1H-1,2,4-triazole-5-thiol 3-Amino-5-methio-1,2,4-triazole 3-Amino-5-mercapto-1,2,4-triazole (AMT) 3-AMINO-1,2,4-TRIAZOLE-5-THIOL 3-Imino-5-thiourazole 4-triazolidine-3-thione,5-imino-2 5-AMINO-1H-1,2,4-TRIAZOLE-3-THIOL iminothiourazole 16691-43-3 16691-43-4 AMINE Heterocyclic Building Blocks Triazoles Building Blocks Organic chemical 3-AMINO-5-MERCAPTO-1,2,4-TRIAZOLE Heterocyclic Compounds THIOL bc0001 16691-43-3

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

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

SAFETY

Risk and Safety Statements

3-Amino-5-mercapto-1,2,4-triazole price More Price(58)

3-Amino-5-mercapto-1,2,4-triazole Chemical Properties,Uses,Production

Uses

Chemical Properties

Uses

Uses

Synthesis Reference(s)

General Description

Purification Methods

Toxics Screening Level

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

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

Raw materials

Preparation Products

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

Related articles

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

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

16691-43-3(3-Amino-5-mercapto-1,2,4-triazole)Related Search: