生物柴油

生物柴油（CAS 37331-50-3）：分子式 H2S、分子量 34.08。

产品概览

应用领域

登记用途：Uses: Hydrogen sulfide is produced naturally by decaying organic matter and is released from sewage sludge、liquid manure、sulfur hot springs、and natural gas. It is a byproduct of many industrial processes including petroleum refining、tanning、mining、wood pulp processing、rayon manufacturing、sugar beet processing、and hot asphalt paving. Hydrogen sulfide is used to produce elemental sulfur、sulfuric acid、and heavy water for nuclear reactors. [ATSDR Medical Management]、Steel Producing [Category: Industry]、Petroleum Production and Refining [Category: Industry]、Pulp and Paper Processing [Category: Industry]、Textiles (Fiber & Fabric Manufacturing) [Category: Industry]、Mining [Category: Industry]、Sewer and Wastewater Treatment [Category: Industry]、Leather Tanning and Processing [Category: Industry]、Farming (Respiratory Hazards) [Category: Industry]、Smoking cigarettes [Category: Food & Drugs]、Superficial sulfurization of metals with hydrogen sulfide allows modification of their physical or chemical properties. Hydrogen sulfide is used for passivation of the walls of reactors operating at high temperature in petrochemical operations such as steam cracking and hydrodealkylation. This treatment prevents desirable secondary reactions. Another use of hydrogen sulfide is the formation of a layer of sulfide on the surface of steel wires or plates that are to be coated with paint or plastic. This treatment protects the coating or improves the action of adhesive primers.、The most common industrial application of hydrogen sulfide is the production of organic compounds with a thiol function (i.e.、RSH、where R is a hydrocarbon group) or a thiol group and another function (e.g.、alcohol、acid).、Certain catalysts reach their maximum activity only when their constituent metals are in the form of sulfides (e.g.、the hydrotreating catalysts used in oil refining). Preliminary treatment with hydrogen sulfide is sometimes necessary. However、hydrogen sulfide also poisons some hydrogenation and reforming catalysts with a platinum or palladium base. This can be used to advantage to reduce initial catalyst activity and limit coking (i.e.、formation of carbonaceous deposits). Gasoline reforming catalysts、for example、are always selectively poisoned with a small quantity of hydrogen sulfide prior to use.、Preliminary treatment with hydrogen sulfide is sometimes required for the purification of ore by selective flotation. ... This process is used in the purification of nickel and manganese.、For more Uses (Complete) data for HYDROGEN SULFIDE (9 total)、please visit the HSDB record page.、Volcanoes and hot springs emit some hydrogen sulfide、where it probably arises via the hydrolysis of sulfide minerals. Hydrogen sulfide can be present naturally in well water、it can be removed using ozone or a filter with manganese dioxide. About 10% of total global emissions of H2S is due to human activity. By far the largest industrial route to hydrogen sulfide occurs in petroleum refineries. Other anthropogenic sources of hydrogen sulfide include coke ovens、paper mills、and tanneries. H2S arises from virtually anywhere where elemental sulfur comes into contact with organic material、especially at high temperatures. Being heavier than air、H2S tends to accumulate at the bottom of poorly ventilated spaces. (L1139)、Use Classification: Chemical Classes -> Inorganic substances、Household Products: Information on 6 consumer products that contain Hydrogen sulfide in the following categories is provided:、• Home Maintenance、Methods of Manufacturing: Hydrogen sulfide is formed when hydrogen is fed into sulfur at 350 °C with or without a catalyst (e.g.、bauxite、aluminum silicate、cobalt molybdate. High pressure also aids the reaction. ... In the industrial production of hydrogen sulfide (Fig. 1)、the reaction occurs at 450 °C and 0.7 MPa. Hydrogen sulfide is separated from sulfur vapor by cooling and solidifying the sulfur on the walls of a heat exchanger. The exchanger is alternately cooled and heated to remelt and eliminate the sulfur deposit.、Sulfur reacts with methane to form a mixture of hydrogen sulfide and carbon disulfide. Carbon disulfide can be hydrolyzed、giving additional hydrogen sulfide. With higher alkanes (>C10) having a low vapor pressure、reaction takes place at 200-300 °C.、Hydrogen sulfide is obtained from ... gas: 1. directly if the hydrogen sulfide-carbon dioxide ratio is high enough to give an acid gas with the desired hydrogen sulfide content (80-90 vol%) or if a selective sweetening process is used、2. after additional treatment、consisting of selective reprocessing (desired purity、90-95%) or compression and subsequent distillation (minimum purity 99.5%).、Derivation: (1) By the action of dilute sulfuric acid on a sulfide、usually iron sulfide、(2) by direct union of hydrogen and sulfur vapor at a definite temperature and pressure、(3) as a by-product of petroleum refining.、Natural gas、synthesis gas、refinery gas、coke oven gas (solvent extraction)、hydrogen + sulfur (reaction)、natural gas (Lacquer distillation process)、natural gas + sulfur (reaction、by-product of carbon disulfide production)、metallurgic coke + sulfur (reaction、coproduced with carbon disulfide).、Formulations、Preparations: Grade: Technical 98.5%、purified 99.5% min、CP、chemically pure、.、Consumption Patterns: 8.85X10+11 G AS AN INT FOR SULFURIC ACID (1966)、U.S. Production: Production volumes for non-confidential chemicals reported under the Inventory Update Rule.[Table#1666]、Production volume for non-confidential chemicals reported under the 2006 Inventory Update Rule. Chemical: Hydrogen sulfide. Aggregated National Production Volume: 1 billion lbs and greater.、General Manufacturing Information: Hydrogen sulfide (H2S): ACTIVE。

技术档案

这个产品是什么

生物柴油 是一种化工化合物，登记 CAS 号为 37331-50-3，分子式 H2S（分子量 34.08）。

识别信息

登记 CAS 号：37331-50-3

其分子式 H2S 由 2 个氢、1 个硫 组成。

别名/同义词：生物柴油 · Biodiesel

常见问题

PubChem 公开数据