high temperature stable insoluble sulfur is-hs series

  • high temperature stable insoluble sulfur is-hs series

    high temperature stable insoluble sulfur is-hs series

    NAME: High Temperature Stable Insoluble Sulfur IS-HS Series Standard: Q/IMFJ 001-1997 Use: Sulfur vulcanizer improves high temperature safety in rubber masticating without frosting and burnt rubber and improves binding of rubber-rubber and rubber-steel or chemical fiber without contaminating mold.

  • high temperature stable insoluble sulfur is-hs series,rubber

    High Temperature Stable Insoluble Sulfur IS-HS Series,Rubber

    High Temperature Stable Insoluble Sulfur IS-HS Series,Rubber Vulcanising Agent,Products,Zhengzhou Double Vigour Chemical Product Co.,Ltd,ItemSpecificationIS-HS-8510IS-HS-8010IS-HS-7520IS-HS-7020IS-HS-6333IS-HS-6033IS-HS-6510IS-HS-6010AppearanceNon

  • high temperature stable insoluble sulfur is-hs series | henan

    High Temperature Stable Insoluble Sulfur IS-HS Series | Henan

    High Temperature Stable Insoluble Sulfur IS-HS; High Temperature Stable Insoluble Sulfur IS-HS Item. Specification IS-HS-8510 IS-HS-8010 IS-HS-7520 IS-HS-7020

  • high stable insoluble sulfur at brazil – the best-selling

    high stable insoluble sulfur at brazil – The best-selling

    high temperature stable insoluble sulfur is-hs series. NAME: High Temperature Stable Insoluble Sulfur IS-HS Series Standard: Q/IMFJ 001-1997 Use: Sulfur vulcanizer improves high temperature safety in rubber masticating without frosting and burnt rubber and improves binding of rubber-rubber and rubber-steel or chemical fiber without contaminating mold.Widely used in natural and synthetic rubber

  • high temperature stable insoluble sulfur is-hs series at best

    High Temperature Stable Insoluble Sulfur IS-HS Series at Best

    Buy low price High Temperature Stable Insoluble Sulfur IS-HS Series in Henan, Zhengzhou. High Temperature Stable Insoluble Sulfur IS-HS Series offered by Zhengzhou Double Vigor Chemical Product Co.,Ltd is available with multiple payment options and easy delivery.

  • insoluble sulfur price, insoluble sulfur manufacturers

    insoluble sulfur price, insoluble sulfur manufacturers

    High Temperature Stable Insoluble Sulfur IS-HS Series. Sulfur vulcanizer improves high temperature safety in rubber masticating without frosting and burnt rubber and improves binding of rubber-rubber and rubber-steel or chemical fiber without con...

  • high temperature stable insoluble sulfur is-hs series,rubber

    High Temperature Stable Insoluble Sulfur IS-HS Series,Rubber

    High Temperature Stable Insoluble Sulfur IS-HS Series,Rubber Vulcanising Agent,Products,Zhengzhou Double Vigour Chemical Product Co.,Ltd,ItemSpecificationIS-HS-8510IS-HS-8010IS-HS-7520IS-HS-7020IS-HS-6333IS-HS-6033IS-HS-6510IS-HS-6010AppearanceNon

  • high temperature stable insoluble sulfur is-hs series

    high temperature stable insoluble sulfur is-hs series

    NAME: High Temperature Stable Insoluble Sulfur IS-HS Series Standard: Q/IMFJ 001-1997 Use: Sulfur vulcanizer improves high temperature safety in rubber masticating without frosting and burnt rubber and improves binding of rubber-rubber and rubber-steel or chemical fiber without contaminating mold.

  • high temperature stable insoluble sulfur is-hs series | henan

    High Temperature Stable Insoluble Sulfur IS-HS Series | Henan

    High Temperature Stable Insoluble Sulfur IS-HS; High Temperature Stable Insoluble Sulfur IS-HS Item. Specification IS-HS-8510 IS-HS-8010 IS-HS-7520 IS-HS-7020

  • high temperature stable insoluble sulfur is-hs series at best

    High Temperature Stable Insoluble Sulfur IS-HS Series at Best

    Buy low price High Temperature Stable Insoluble Sulfur IS-HS Series in Henan, Zhengzhou. High Temperature Stable Insoluble Sulfur IS-HS Series offered by Zhengzhou Double Vigor Chemical Product Co.,Ltd is available with multiple payment options and easy delivery.

  • insoluble sulfur is-hs(high thermal stability)--wuxi huasheng

    Insoluble Sulfur IS-HS(High Thermal Stability)--WUXI HUASHENG

    Insoluble Sulfur IS-HS(High Thermal Stability) It is used as the best vulcanizing agent for rubber. And it is widely used in the manufacture of the rubber chemistry such as tire, rubber pipe, shoes, cable and wire, insulating materials, latex, and all kinds of automobile rubber parts, especially for radial tires.

  • insoluble sulphur manufacturers, insoluble sulfur suppliers

    Insoluble Sulphur Manufacturers, Insoluble Sulfur Suppliers

    Find here directory of insoluble sulphur (cas no 9035-99-8), insoluble sulfur manufacturers, suppliers and exporters. These insoluble sulfur manufacturing companies are providing high quality products.

  • high temperature stable insoluble sulfur is-hs series

    high temperature stable insoluble sulfur is-hs series

    NAME: High Temperature Stable Insoluble Sulfur IS-HS Series Standard: Q/IMFJ 001-1997 Use: Sulfur vulcanizer improves high temperature safety in rubber masticating without frosting and burnt rubber and improves binding of rubber-rubber and rubber-steel or chemical fiber without contaminating mold.

  • high temperature stable insoluble sulfur is-hs series,rubber

    High Temperature Stable Insoluble Sulfur IS-HS Series,Rubber

    High Temperature Stable Insoluble Sulfur IS-HS Series,Rubber Vulcanising Agent,Products,Zhengzhou Double Vigour Chemical Product Co.,Ltd,ItemSpecificationIS-HS-8510IS-HS-8010IS-HS-7520IS-HS-7020IS-HS-6333IS-HS-6033IS-HS-6510IS-HS-6010AppearanceNon

  • high temperature stable insoluble sulfur is-hs series at best

    High Temperature Stable Insoluble Sulfur IS-HS Series at Best

    Buy low price High Temperature Stable Insoluble Sulfur IS-HS Series in Henan, Zhengzhou. High Temperature Stable Insoluble Sulfur IS-HS Series offered by Zhengzhou Double Vigor Chemical Product Co.,Ltd is available with multiple payment options and easy delivery.

  • high stable insoluble sulfur at brazil – the best-selling

    high stable insoluble sulfur at brazil – The best-selling

    high temperature stable insoluble sulfur is-hs series. NAME: High Temperature Stable Insoluble Sulfur IS-HS Series Standard: Q/IMFJ 001-1997 Use: Sulfur vulcanizer improves high temperature safety in rubber masticating without frosting and burnt rubber and improves binding of rubber-rubber and rubber-steel or chemical fiber without contaminating mold.Widely used in natural and synthetic rubber

  • insoluble sulfur is7020 for rubber and tyre industries

    Insoluble Sulfur Is7020 For Rubber And Tyre Industries

    Insoluble Sulfur Is7020 For Rubber And Tyre Industries , Find Complete Details about Insoluble Sulfur Is7020 For Rubber And Tyre Industries,High Temperature Stable Insoluble Sulfur,High Purity Sulfur,Is7020/is6033 from Rubber Auxiliary Agents Supplier or Manufacturer-Zhengzhou Double Vigour Chemical Product Co., Ltd.

  • insoluble sulfur is-hs(high thermal stability)--wuxi huasheng

    Insoluble Sulfur IS-HS(High Thermal Stability)--WUXI HUASHENG

    Insoluble Sulfur IS-HS(High Thermal Stability) It is used as the best vulcanizing agent for rubber. And it is widely used in the manufacture of the rubber chemistry such as tire, rubber pipe, shoes, cable and wire, insulating materials, latex, and all kinds of automobile rubber parts, especially for radial tires.

  • high temperature stable insoluble sulfur is-hs series,rubber

    High Temperature Stable Insoluble Sulfur IS-HS Series,Rubber

    High Temperature Stable Insoluble Sulfur IS-HS Series,Rubber Vulcanising Agent,Products,Zhengzhou Double Vigour Chemical Product Co.,Ltd,ItemSpecificationIS-HS-8510IS-HS-8010IS-HS-7520IS-HS-7020IS-HS-6333IS-HS-6033IS-HS-6510IS-HS-6010AppearanceNon

  • high temperature stable insoluble sulfur is-hs series | henan

    High Temperature Stable Insoluble Sulfur IS-HS Series | Henan

    High Temperature Stable Insoluble Sulfur IS-HS; High Temperature Stable Insoluble Sulfur IS-HS Item. Specification IS-HS-8510 IS-HS-8010 IS-HS-7520 IS-HS-7020

  • high temperature stable insoluble sulfur is-hs series at best

    High Temperature Stable Insoluble Sulfur IS-HS Series at Best

    Buy low price High Temperature Stable Insoluble Sulfur IS-HS Series in Henan, Zhengzhou. High Temperature Stable Insoluble Sulfur IS-HS Series offered by Zhengzhou Double Vigor Chemical Product Co.,Ltd is available with multiple payment options and easy delivery.

  • insoluble sulfur price, insoluble sulfur manufacturers

    insoluble sulfur price, insoluble sulfur manufacturers

    High Temperature Stable Insoluble Sulfur IS-HS Series. Sulfur vulcanizer improves high temperature safety in rubber masticating without frosting and burnt rubber and improves binding of rubber-rubber and rubber-steel or chemical fiber without con...

  • temperature stable insoluble sulfur is-hs series rubber

    Temperature Stable Insoluble Sulfur IS-HS Series Rubber

    Buy low price Temperature Stable Insoluble Sulfur IS-HS Series Rubber Antioxidant Polymer Sulfur Vulcanizing Agent IS7020 in Twenty Jiazi Town, Chaoyang. Temperature Stable Insoluble Sulfur IS-HS Series Rubber Antioxidant Polymer Sulfur Vulcanizing Agent IS7020 offered by Chaogong Mingyu Chemical Co., Ltd. is available with multiple payment options and easy delivery.

  • insoluble sulphur manufacturers, insoluble sulfur suppliers

    Insoluble Sulphur Manufacturers, Insoluble Sulfur Suppliers

    Find here directory of insoluble sulphur (cas no 9035-99-8), insoluble sulfur manufacturers, suppliers and exporters. These insoluble sulfur manufacturing companies are providing high quality products.

  • sulfur

    Sulfur

    Sulfur (in British English, sulphur) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S 8. Elemental sulfur is a bright yellow, crystalline solid at room temperature.

  • eastman crystex insoluble sulfur

    Eastman Crystex Insoluble Sulfur

    Insoluble sulfur is the vulcanizing agent of choice for the tire industry. Crystex is a polymeric form of sulfur that is a non-blooming vulcanizing agent for rubber. By being insoluble in rubber, Crystex prevents sulfur migration and, in turn, bloom which interferes with the tire building process.

  • production of insoluble sulfur - stauffer chemical co

    Production of insoluble sulfur - STAUFFER CHEMICAL CO

    Production of insoluble sulfur . United States Patent 2460365 . Abstract: This is a continuation in part of my application Serial Number 517,437, filed January 7

  • insoluble sulfur market size & share | industry report, 2020-2027

    Insoluble Sulfur Market Size & Share | Industry Report, 2020-2027

    The global insoluble sulfur market size was valued at USD 973.2 million in 2019 and is expected to register a compound annual growth rate (CAGR) of 2.9% from 2020 to 2027. Rising product demand as a curing agent from rubber producers is projected to remain a key driving factor for the market growth

  • us4359452a - process for the production of insoluble sulfur

    US4359452A - Process for the production of insoluble sulfur

    A novel process for the preparation of insoluble sulfur product comprises the steps of vaporizing sulfur, mixing the vaporized sulfur with from about 1×10 -6 % to about 5% hydrogen sulfide, in the essential absence of hydrocarbon oil, quenching the vaporized sulfur in a quenching medium and separating the insoluble sulfur product from the quenching medium.

  • insoluble sulfur

    Insoluble sulfur

    Insoluble sulfur, also known as polymeric sulfur, is an unstable form of elemental sulfur. The product comes in the form of yellow powder containing naphthenic oil (20% or 33%). It meets the quality requirements of Company Standard ZN-93/01. The company holds the patent for the insoluble sulfur production technology.

  • high temperature stable insoluble sulfur is-hs series,rubber

    High Temperature Stable Insoluble Sulfur IS-HS Series,Rubber

    High Temperature Stable Insoluble Sulfur IS-HS Series,Rubber Vulcanising Agent,Products,Zhengzhou Double Vigour Chemical Product Co.,Ltd,ItemSpecificationIS-HS-8510IS-HS-8010IS-HS-7520IS-HS-7020IS-HS-6333IS-HS-6033IS-HS-6510IS-HS-6010AppearanceNon

  • high stable insoluble sulfur at brazil – the best-selling

    high stable insoluble sulfur at brazil – The best-selling

    high temperature stable insoluble sulfur is-hs series. NAME: High Temperature Stable Insoluble Sulfur IS-HS Series Standard: Q/IMFJ 001-1997 Use: Sulfur vulcanizer improves high temperature safety in rubber masticating without frosting and burnt rubber and improves binding of rubber-rubber and rubber-steel or chemical fiber without contaminating mold.Widely used in natural and synthetic rubber

  • insoluble sulfur is7020 for rubber and tyre industries

    Insoluble Sulfur Is7020 For Rubber And Tyre Industries

    Insoluble Sulfur Is7020 For Rubber And Tyre Industries , Find Complete Details about Insoluble Sulfur Is7020 For Rubber And Tyre Industries,High Temperature Stable Insoluble Sulfur,High Purity Sulfur,Is7020/is6033 from Rubber Auxiliary Agents Supplier or Manufacturer-Zhengzhou Double Vigour Chemical Product Co., Ltd.

  • high temperature stable insoluble sulfur is-hs series at best

    High Temperature Stable Insoluble Sulfur IS-HS Series at Best

    Buy low price High Temperature Stable Insoluble Sulfur IS-HS Series in Henan, Zhengzhou. High Temperature Stable Insoluble Sulfur IS-HS Series offered by Zhengzhou Double Vigor Chemical Product Co.,Ltd is available with multiple payment options and easy delivery.

  • 6ppd rubber antioxidant agent, rubber antioxidant agent 6ppd

    6ppd rubber antioxidant agent, rubber antioxidant agent 6ppd

    Properties: Pure 6PPD is white solid product, and will gradually oxidizing to brown solid when exposed to the air.Industrial product—6PPD is purple brown to black brown granules or flakes, and will slowly caking When the temperature exceeds 35-40℃.Soluble in gasline, benzene, acetone, ethyl acetate, dichloroethane, carbon tetrachloride ,methylbenzene, ethylalcohol and other organic

  • rubber chemicals product application

    Rubber Chemicals Product Application

    2013/6/4 23:45:07 We devote to the research, produce and marketing of the rubber chemicals . The main products are series of rubber accelerators , rubber antioxidants, vulcanising agents and the high temperature stable insoluble sulfur IS-HS.

  • eastman crystex insoluble sulfur

    Eastman Crystex Insoluble Sulfur

    Insoluble sulfur is the vulcanizing agent of choice for the tire industry. Crystex is a polymeric form of sulfur that is a non-blooming vulcanizing agent for rubber. By being insoluble in rubber, Crystex prevents sulfur migration and, in turn, bloom which interferes with the tire building process.

  • insoluble sulfur - nynas

    Insoluble Sulfur - Nynas

    Insoluble sulphur is the preferred curing agent for the majority of the rubber industry. By keeping insoluble sulphur dispersed in the oil, any risk of conversion is lowered, while still facilitating the incorporation of the curing agent into the rubber compound.

  • us4359452a - process for the production of insoluble sulfur

    US4359452A - Process for the production of insoluble sulfur

    A novel process for the preparation of insoluble sulfur product comprises the steps of vaporizing sulfur, mixing the vaporized sulfur with from about 1×10 -6 % to about 5% hydrogen sulfide, in the essential absence of hydrocarbon oil, quenching the vaporized sulfur in a quenching medium and separating the insoluble sulfur product from the quenching medium.

  • cn104445087a - high quality insoluble sulfur and method

    CN104445087A - High quality insoluble sulfur and method

    The insoluble sulfur manufactured according to the method is over 90% in content of insoluble sulfur in relative to the total sulfur, lower than 1.5% in residue on sieve, lower than 71% in high throughput screening (HTS), and 5-30 [mu]m in particle size, has a high quality, and thus can serve as a vulcanizing agent in the rubber industry

  • application of insoluble sulfur in rubber | nanjing union

    Application of insoluble sulfur in rubber | Nanjing Union

    Insoluble sulfur exists in the rubber compound in the form of sand crystal in the rubber mixing process, to avoid the plastic spray frost, and prevent the migration of sulfur, so that the material can maintain a good shape of sticky.

  • insoluble sulfur | scienoc

    Insoluble sulfur | SCIENOC

    Application and characteristics: Application. ① insoluble sulfur can be used in rubber industries, as curing agents make rubber surface spray cream, which will improve the steel-adhesive binding, because the plastic uniform distribution, which would ensure the quality of vulcanization, is the best rubber curing agent, it is widely used tire carcass compound, in particular meridian tires all

  • high temperature stable insoluble sulfur is-hs series

    high temperature stable insoluble sulfur is-hs series

    NAME: High Temperature Stable Insoluble Sulfur IS-HS Series Standard: Q/IMFJ 001-1997 Use: Sulfur vulcanizer improves high temperature safety in rubber masticating without frosting and burnt rubber and improves binding of rubber-rubber and rubber-steel or chemical fiber without contaminating mold.

  • high temperature stable insoluble sulfur is-hs series,rubber

    High Temperature Stable Insoluble Sulfur IS-HS Series,Rubber

    High Temperature Stable Insoluble Sulfur IS-HS Series,Rubber Vulcanising Agent,Products,Zhengzhou Double Vigour Chemical Product Co.,Ltd,ItemSpecificationIS-HS-8510IS-HS-8010IS-HS-7520IS-HS-7020IS-HS-6333IS-HS-6033IS-HS-6510IS-HS-6010AppearanceNon

  • high temperature stable insoluble sulfur is-hs series at best

    High Temperature Stable Insoluble Sulfur IS-HS Series at Best

    Buy low price High Temperature Stable Insoluble Sulfur IS-HS Series in Henan, Zhengzhou. High Temperature Stable Insoluble Sulfur IS-HS Series offered by Zhengzhou Double Vigor Chemical Product Co.,Ltd is available with multiple payment options and easy delivery.

  • high stable insoluble sulfur at brazil – the best-selling

    high stable insoluble sulfur at brazil – The best-selling

    high temperature stable insoluble sulfur is-hs series. NAME: High Temperature Stable Insoluble Sulfur IS-HS Series Standard: Q/IMFJ 001-1997 Use: Sulfur vulcanizer improves high temperature safety in rubber masticating without frosting and burnt rubber and improves binding of rubber-rubber and rubber-steel or chemical fiber without contaminating mold.Widely used in natural and synthetic rubber

  • insoluble sulfur is7020 for rubber and tyre industries

    Insoluble Sulfur Is7020 For Rubber And Tyre Industries

    Insoluble Sulfur Is7020 For Rubber And Tyre Industries , Find Complete Details about Insoluble Sulfur Is7020 For Rubber And Tyre Industries,High Temperature Stable Insoluble Sulfur,High Purity Sulfur,Is7020/is6033 from Rubber Auxiliary Agents Supplier or Manufacturer-Zhengzhou Double Vigour Chemical Product Co., Ltd.

  • insoluble sulphur manufacturers, insoluble sulfur suppliers

    Insoluble Sulphur Manufacturers, Insoluble Sulfur Suppliers

    Find here directory of insoluble sulphur (cas no 9035-99-8), insoluble sulfur manufacturers, suppliers and exporters. These insoluble sulfur manufacturing companies are providing high quality products.

  • insoluble sulfur is7020 for rubber and tyre industries

    Insoluble Sulfur Is7020 For Rubber And Tyre Industries

    Insoluble Sulfur Is7020 For Rubber And Tyre Industries , Find Complete Details about Insoluble Sulfur Is7020 For Rubber And Tyre Industries,High Temperature Stable Insoluble Sulfur,High Purity Sulfur,Is7020/is6033 from Rubber Auxiliary Agents Supplier or Manufacturer-Zhengzhou Double Vigour Chemical Product Co., Ltd.

  • rubber chemicals product supply | multipurpose water

    Rubber Chemicals Product Supply | Multipurpose water

    The main products are series of rubber accelerators, rubber antioxidants, vulcanising agents and the high temperature stable insoluble sulfur IS-HS. And they are usually used in the manufacture of rubber tires, rubber belts, rubber shoes, cables, conveyer belts and latex etc.

  • insoluble sulphur manufacturers, insoluble sulfur suppliers

    Insoluble Sulphur Manufacturers, Insoluble Sulfur Suppliers

    Find here directory of insoluble sulphur (cas no 9035-99-8), insoluble sulfur manufacturers, suppliers and exporters. These insoluble sulfur manufacturing companies are providing high quality products.

  • rubber vulcanising agent,products,zhengzhou double vigour

    Rubber Vulcanising Agent,Products,Zhengzhou Double Vigour

    Name: High Temperature Stable Insoluble Sulfur IS-HS Series; Name: Vulcanising Agent DTDM; current show 1-2 record total 2 record . jump page. first previous 1 next last.

  • list of insoluble sulfur companies in china

    List of Insoluble Sulfur companies in China

    Qingdao Zhongjian Rubber Chemicals Co., Ltd. is a chemical company specializing in producing products of rubber chemicals. Our located the beautiful city---Qingdao City. The main include high temperature stable insoluble sulfur IS-HS series: IS-HS8510, 8010, 7520, 7020, and 6033 types; IS

  • china rubber antioxidant manufacturer, ubber antioxidant

    China Rubber Antioxidant manufacturer, Ubber Antioxidant

    Our company is located in the beautiful city---Qingdao City. The main products include high temperature stable insoluble sulfur IS-HS series: IS-HS8510, 8010, 7520, 7020, and 6033 types; Insoluble sulfur IS series: IS7020, 6033, and 8010 types; Rubber antioxidant 6PPD(4020),

  • insoluble sulphur manufacturers, suppliers - buy best price

    Insoluble Sulphur Manufacturers, Suppliers - Buy Best Price

    Insoluble Sulfur IS-HS(High Thermal Stability) can improve the resistance to both fatigue and ageing of all kinds of rubber products. It is used as the best vulcanizing agent for rubber. And it is widely used in the manufacture of the rubber chemistry such as tire, rubber pipe, shoes, cable and wire, insulating materials, latex, and all kinds

  • free sampl of research paper suppliers, all quality - alibaba

    Free Sampl Of Research Paper Suppliers, all Quality - Alibaba

    High Temperature Stable Insoluble Sulfur IS-HS Series --Free High Temperature Stable Insoluble Sulfur | Is-hs. air filter,medium efficiency filter,High

  • rubber antioxidant 4010na formula calculator

    rubber antioxidant 4010na formula calculator

    Rubber Antioxidant IPPD (4010NA) - Bikudo. rubber antioxidant ippd formula list. Rubber Antioxidant IPPD(4010NA) Rubber Antioxidant TMQ(RD) Antiscorching Agent Antiscorching Agent PVI(CTP) Vulcanizing Agent Vulcanizing Agent DTDM Insoluble Sulfur High Temperature Stable Insoluble Sulfur IS-HS Series Intermediates Accelerator M Sodium salt Thiazoles BT.

  • rubber chemicals, taiwan rubber chemicals - ttnet

    rubber chemicals, Taiwan rubber chemicals - TTNET

    NAME: High Temperature Stable Insoluble Sulfur IS-HS Series Standard: Q/IMFJ 001-1997 Use: Sulfur vulcanizer improves high temperature Zhengzhou Double Vigour Chemical Product Co., Ltd . Add to Inquiry Cart

  • rubber raw material, insoluble sulfur - wuxi wanli chemical

    rubber raw material, insoluble sulfur - Wuxi Wanli Chemical

    Factory covers an area of 150 acres ,production capacity reaches 10000mt/year ,now we are key producer of Insoluble sulfur in china . Our main products are high heat stable IS-HS-series, high dispersive IS-HD series . Our factory cooperating with universities on technical innovation to keep technical progress, we owns superior technology.

  • sulfur manufacturers & suppliers, china sulfur manufacturers

    Sulfur Manufacturers & Suppliers, China sulfur Manufacturers

    Insoluble Sulfur, Rubber Vulcanizing Temperature Stable Is HS Series Rubber Antioxidant Granular Sulfur Ot20 Sulfur High Purity 99.9% Elemental Sulfur Price