Bulk Methyl Mercaptan 74-93-1 | Zhishangchemical

Q: Why does high-purity Methyl Mercaptan give better yields in DL-methionine synthesis?

It comes down to impurity control inside your reaction loops. Lower-grade methanethiol gas often contains high levels of dimethyl sulfide (DMS) and unreacted hydrogen sulfide (H₂S). These impurities poison precious metal catalysts and trigger unwanted side reactions during the acrolein addition stage. Our 99.5% pure Methyl Mercaptan ensures clean addition kinetics, optimizing your methionine synthesis yield and cutting downstream waste.

Q: What specific pressure and temperature regulations prevent Methyl Mercaptan from polymerizing or degrading during transit?

Methanethiol gas remains chemically stable when isolated from oxidizers. However, to prevent phase changes and pressure spikes, you must store the pressurized cylinders in a cool, dry, and sharply ventilated hazardous warehouse away from direct sunlight. Maintain the storage zone below 40°C (104°F) and regularly inspect the cylinder valves for seals.

Q: How does your quality control lab verify the exact gas composition of Methyl Mercaptan for international shipments?

Our analytical laboratory runs automated gas chromatography (GC) equipped with a flame photometric detector (FPD) to track sulfur compounds accurately. We map the exact percentages of active methanethiol, residual water, H₂S, and trace ethers for every single batch. We archive identical gas retention samples to ensure an airtight audit trail for your compliance department.

Q: What shipping containers and safety protocols do you use for trans-border freight of Methyl Mercaptan?

We ship bulk Methyl Mercaptan exclusively in certified, high-pressure steel cylinders and dedicated ISO tank containers that meet strict international maritime dangerous goods (IMDG) frameworks. Our export desk manages all hazardous manifests, pressure test certificates, and custom clearance paperwork upfront. This rigorous preparation guarantees a hassle-free port crossing and a safe delivery to your plant door.

Mercaptan 74-93-1

98% / 99% High Purity Mercaptan 74-93-1

Appearance:liquid
Proportion: Minimum 99.0%
Inventory: In stock
Sample: Free sample
Zhishang Chemical: Supplier and manufacturer of Mercaptan 74-93-1

Description of Mercaptan:

Technical Overview: Methyl Mercaptan (CAS 74-93-1)

Methyl Mercaptan (CAS 74-93-1), frequently traded as methanethiol, acts as a critical organosulfur building block for massive chemical manufacturing chains. Plant engineers utilize this highly reactive gas primarily to synthesize methionine, an essential amino acid for global animal feed lines. It also serves as a foundational precursor in synthesis routes for high-efficiency jet fuel additives, plastics, and agricultural pesticides.

At standard temperature and pressure, this colorless substance carries a distinct, intense odor. Because it liquefies easily under pressure, logistics teams handle and store the compound inside heavy-duty steel cylinders to maintain operational safety inside your facility.

Streamlined Methanethiol Synthesis Pathway

[Methanol Feedstock] + [Hydrogen Sulfide Gas] ➔ [Vapor-Phase Catalytic Bed] ➔ [Fractional Liquefaction] ➔ [Pure Methyl Mercaptan]

The workflow chart above illustrates our automated production loop. This high-efficiency vapor-phase system guarantees a clean reaction output, allowing us to enforce the following baseline specifications across every batch:

Parameter Matrix	Checked Value Profile	Operational Standard
Active Methyl Mercaptan Purity	\(\ge \) 99.50% (validated by GC)	Protects downstream catalyst life
Hydrogen Sulfide Contamination	\(\le \) 0.10%	Minimizes side reactions
Dimethyl Sulfide Impurity	\(\le \) 0.15%	Ensures high synthesis yields

METHYL MERCAPTAN Chemical Properties

Melting point	−123 °C(lit.)
Boiling point	6 °C(lit.)
density	0.8665
vapor density	1.66 (vs air)
vapor pressure	1536 mm Hg ( 20 °C)
refractive index	1.4020 (estimate)
FEMA	2716 \| METHYL MERCAPTAN
Fp	<71℃
solubility	Soluble in alcohol, ether (Weast, 1986), and petroleum naphtha (Hawley, 1981)
form	liquid
pka	10.3(at 25℃)
Odor	at 0.01 % in propylene glycol. decomposing cabbage garlic
Odor Type	sulfurous
Odor Threshold	0.00007ppm
explosive limit	21.8%

Mercaptan 's supply advantage and supply capability

1. High monthly production capacity and secure inventory buffer

We safeguard your processing facility from sudden raw material shortages by maintaining a 30-ton in-house stock buffer at our specialized hazardous chemicals warehouse. Our automated synthesis line continuously runs high-pressure reactions, consistently producing 1,500 tons of premium-quality product each month. This large-scale infrastructure ensures you bypass market shortages and logistics delays. Whether your current manufacturing needs small trial-scale gas cylinder sets or multi-ton bulk container shipments, your cargo will be delivered through our loading docks within 72 hours.

2. Advanced Low DMS Catalytic Purification

Our technical team has developed a low-temperature gas-phase catalytic bed process that reduces (DMS) impurities to a strict maximum of 0.15%. This advanced separation circuit prevents catalyst poisoning in downstream reactors, significantly lowering your overall purification costs. We employ automated gas chromatography (GC) for continuous monitoring of the gas stream, ensuring batch consistency throughout long-term supply contracts. Before the pressure vessel arrives at your facility, your engineering team will receive an official factory-direct analysis certificate.

The packaging of Mercaptan

We will use different standard packaging according to the product form.

● Liquid product: packaged in blue plastic drums, with a standard specification of 200 kg/drum; 220kg/barrel/250kg/barrel, tightly sealed barrel mouth, leak proof, resistant to bumps, suitable for long-distance transportation.

● Powdered products: packaged in thick cardboard drums, with a standard net weight of 25 kilograms per drum; 200 kg/barrel; 220kg/barrel/250kg/barrel, the barrel body is sturdy and pressure resistant, while also having good moisture resistance.

● Sample: sealed uniformly in aluminum foil bags with strong sealing abilities, which can prevent moisture and air from entering the bag and cause it to deteriorate.

Packaging can be tailored to meet customer needs, with standard packaging processes that ensure the quality of goods is maintained during storage and transport.

Mercaptan Supplier and Manufacturer

As a Mercaptan supplier and manufacturer with a strict standard product quality system certificate, Zhishang Chemical has long been providing the best Mercaptan raw materials to customers all over the world.

Over the years, relying on professional team experience and customer-centric team concept to meet customer needs in a timely manner, our company enjoys a high reputation in the world. At present, our company has served more than 6,000 customers and has established long-term cooperative relations with customers from many countries.

If you have a demand for Mercaptan and related products, please contact our service staff Zhishang Chemical – White directly, and we will provide you with high-quality products at the best price.

Zhishang Chemical has its own R&D lab, with professional teams and advanced equipment. We also have rigorous processes and procedures to ensure the quality of our products.

▶ The laboratory is over 1500 square metres in size, and has been divided into functional zones to accommodate testing requirements.

▶ The core R&D Team consists of three PhDs and seven or more masters with rich technical expertise.

▶ Equipment with international advanced analytical and testing equipment, such as HPLC GC, FTIR NMR AAS etc. to achieve precise control during the entire process.

▶ We can develop customized products and will optimize formulas and processes according to customer needs.

▶ Set strict standards for product quality inspection and make sure that each batch is subjected to multiple inspection stages in order to ensure stable and reliable performance.

FAQ:

Why does high-purity Methyl Mercaptan give better yields in DL-methionine synthesis?

It comes down to impurity control inside your reaction loops. Lower-grade methanethiol gas often contains high levels of dimethyl sulfide (DMS) and unreacted hydrogen sulfide (\(H_{2}S\)). These impurities poison precious metal catalysts and trigger unwanted side reactions during the acrolein addition stage. Our 99.5% pure Methyl Mercaptan ensures clean addition kinetics, optimizing your methionine synthesis yield and cutting downstream waste.

What specific pressure and temperature regulations prevent this organosulfur gas from polymerizing or degrading during transit?

Methanethiol gas remains chemically stable when isolated from oxidizers. However, to prevent phase changes and pressure spikes, you must store the pressurized cylinders in a cool, dry, and sharply ventilated hazardous warehouse away from direct sunlight. Maintain the storage zone below 40°C (104°F) and regularly inspect the cylinder valves for seals.

How does your quality control lab verify the exact gas composition for international shipments?

Our analytical laboratory runs automated gas chromatography (GC) equipped with a flame photometric detector (FPD) to track sulfur compounds accurately. We map the exact percentages of active methanethiol, residual water, \(H_{2}S\), and trace ethers for every single batch. We archive identical gas retention samples to ensure an airtight audit trail for your compliance department.

What shipping containers and safety protocols do you use for trans-border freight?

We ship bulk Methyl Mercaptan exclusively in certified, high-pressure steel cylinders and dedicated ISO tank containers that meet strict international maritime dangerous goods (IMDG) frameworks. Our export desk manages all hazardous manifests, pressure test certificates, and custom clearance paperwork upfront. This rigorous preparation guarantees a hassle-free port crossing and a safe delivery to your plant door.