Name | Sulfur(α) |
Synonyms | S S-80 IS60 That s-80 Svovl sulfur rasulf thione sulphur Thiolux supersix tesuloid Super six Sulfur(α) supercosan sulfur roll sulfur powder sulfur flowers sulfur, sublimed microthiol special sulfur precipitated technetiumtc99msulfurcolloid |
CAS | 7704-34-9 |
EINECS | 231-722-6 |
InChI | InChI=1/S |
InChIKey | RWSOTUBLDIXVET-UHFFFAOYSA-N |
Molecular Formula | S8 |
Molar Mass | 256.52 |
Density | 2.36 |
Melting Point | 114 °C |
Boling Point | 445 °C |
Flash Point | 168 °C |
Water Solubility | Insoluble |
Solubility | carbon disulfide: in accordance1g/5mL |
Vapor Presure | 1 mm Hg ( 183.8 °C) |
Vapor Density | 8.9 (vs air) |
Appearance | powder |
Specific Gravity | 2.07 |
Color | Yellow |
Merck | 13,9059 / 13,9067 |
Physical and Chemical Properties | The character of powdered sulfur is light yellow powder. melting point 112.8 ℃(α-type) boiling point 444.6 ℃ relative density 2.07(α-type) solubility soluble in carbon disulfide, insoluble in water, slightly soluble in ethanol and ethers. |
Use | For the manufacture of sulfuric acid, dyes and rubber products, but also for pharmaceutical and other industrial sectorsHigh purity sulfur for semiconductor industry, other uses with sulfur deposition |
Risk Codes | R11 - Highly Flammable R38 - Irritating to the skin |
Safety Description | S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S46 - If swallowed, seek medical advice immediately and show this container or label. |
UN IDs | UN 1350 4.1/PG 3 |
WGK Germany | 1 |
RTECS | WS4250000 |
TSCA | Yes |
HS Code | 28020000 |
Hazard Class | 4.1 |
Packing Group | III |
Toxicity | LDLo intravenous in dog: 10mg/kg |
as a yellow or light yellow solid. Easy to burn, the combustion temperature is generally 248~261 degrees Celsius, and sulfur dioxide is produced during combustion. Soluble in carbon disulfide, carbon tetrachloride and benzene, slightly soluble in ethanol and ethers, insoluble in water. Both electrical and thermal conductivity are poor. Liquid sulfur can dissolve hydrogen sulfide, and its solubility increases with the increase of temperature, and hydrogen sulfide can be precipitated when the temperature decreases.
industrial sulfur is refined by heating, adding arsenic removing agent and heavy metal removing agent, grinding and sieving to obtain food-grade sulfur.
sulfur (S) of this product shall not be less than 98.0%.
In the food industry for preservation, insecticidal, bleaching and so on. China's provisions are limited to fumigation products.
GRAS (FDA,& sect;184, 3826,2000). Long-term inhalation of sulfur dust, prone to fatigue, Head Pain, dizziness, indigestion and other symptoms. Staff should be protected. Sulfur dust explosive, 850Tim particle sulfur dust, when the concentration of more than 2. 3g/m3 will be an explosion. Powdered sulfur was stored in a ventilated, dry warehouse. Bulk, granular, and flaky sulfur may be stored in open air or in an indoor warehouse. Keep away from heat source and fire, and do not store and mix with charcoal, acids and oxidants. Due to the precipitation of hydrogen sulfide in the liquid sulfur, the exhaust holes above the storage tank must be kept clear during storage and transportation to avoid the accumulation of hydrogen sulfide and explosion. Sulfur powder should not be affected with moisture. When loading and unloading, it should be handled lightly to prevent moisture due to damage to the package. When there is a fire, it can be suppressed by water, sand and carbon dioxide. The powder is prone to combustion or even explosion in air or when mixed with an oxidant. Non-toxic.
take l.Og of this product, add 25ml of water, after strong shaking, add several drops of phenolphthalein indicator solution and 0.10ml of sodium hydroxide titration solution (0.lmol/L), which should be light red.
take 10.OG of this product, sieved with No. 8 sieve, if there is caking, the mass can be gently clapped and sieved. The powder passing through sieve No. 8 shall not be less than 85.0%.
not more than 0.2% (General rule 0841).
take 0.50g of this product, add 15ml of ammonia test solution, soak for 3 hours, filter; Take 5ml of filtrate, put it on a water bath to evaporate dry, add 1ml of nitric acid, and then evaporate dry, add hydrochloric acid 5ml and water 23ML, according to the law inspection (General Principles 0822 The first law), should comply with the provisions (0.0012%).
take this product, dry it in a phosphorus pentoxide dryer for 4 hours, then take about 35mg, precisely weigh it, and carry out organic destruction according to the oxygen flask combustion method (General rule 0703), 5ml of hydrogen peroxide solution and 10ml of water are used as absorption liquid. After the combustion is completed, the combustion flask is cooled in an ice bath and shaken for about 20 minutes, so that the generated smoke is completely absorbed and boiled for 2 minutes, cool, add 2 drops of phenolphthalein indicator solution, and use sodium hydroxide titration solution (O. 1 mol/L) titration, and the results of the titration were corrected with a blank test. Each 1 ml of sodium hydroxide titration solution (0.1 mol/L) corresponds to 1.603mg of S.
insecticides.
sealed storage.
This product sulfur (S) should be 9.0% ~ 11.0%.
This product is yellow ointment, sulfur special odor.
should comply with the relevant provisions under ointment (General rule 0109).
take about 0.5g of this product, weigh it accurately, add 5% sodium sulfite solution 40ml, heat reflux for about 1.5 hours, dissolve the sulfur, cool it, and solidify the matrix, filter the solution, wash the remaining matrix with 30ml hot water, cool, filter, wash several times with the same method, combine the filtrate and wash solution, add 10ml formaldehyde test solution and 6ml acetic acid, dilute to 150ml with water, the starch indicator solution was added and titrated with Iodine titration solution (0.05mol/L). Each 1 ml of iodine titrant (0.05mol/L) corresponds to 3.206mg of sulfur (S).
The same as the rising of sulfur.
10 %
sealed and stored at 30°C or less.