13803

Sulfur

99.5-100.5%, puriss., meets analytical specification of Ph. Eur., BP, USP, precipitated

• Formule empirique (notation de Hill): S
• Numéro CAS: 7704-34-9
• Poids moléculaire : 32.07
• Numéro CE : 231-722-6
• Numéro MDL: MFCD00085316
• Code UNSPSC : 12141912
• ID de substance PubChem : 329750348
• Nomenclature NACRES : SB.54

Propriétés

• Densité de vapeur: 8.9 (vs air)
• Pression de vapeur: 1 mmHg ( 183.8 °C); 10 mmHg ( 246 °C)
• Qualité: puriss.; meets analytical specification of Ph. Eur., BP, USP; precipitated
• Pureté: 99.5-100.5%
• Forme: solid
• Température d'inflammation spontanée: 450 °F
• Résistivité: 2E23 μΩ-cm, 20°C
• Impuretés: acidity or alkalinity, complies; residual solvents, complies; ≤0.01% free alkali (as NaOH); ≤0.02% free acid (as H₂SO₄); ≤0.5% water (Karl Fischer)
• Résidus de calcination: ≤0.2% (as SO₄); ≤0.3%
• Point d'ébullition: 444.7 °C (lit.)
• Pf: 112.8 °C (rhombic) (lit.); 117-120 °C (lit.); 119.0 °C (monoclinic) (lit.)
• Solubilité: carbon disulfide: in accordance 1 g/5mL
• Traces d'anions: chloride (Cl^-): ≤100 mg/kg; sulfate (SO₄^2-): ≤100 mg/kg; sulfide (S^2-): ≤10 mg/kg
• Traces de cations: As: ≤40 mg/kg
• Adéquation: complies for appearance of solution; corresponds for odor
• Chaîne SMILES: [S]
• InChI: 1S/S
• Clé InChI: NINIDFKCEFEMDL-UHFFFAOYSA-N

Description

Description générale

Sulfur is present in abundant quantities in marine and freshwater sediments. It exists in the form of various sulfur compounds such as pyrite, acid volatile sulfides, elemental sulfur, sulfates and organic sulfur.Quantitative estimation of reduced inorganic sulfur compounds in modern sediments and shales by a chromium reduction technique has been described.
Sulfur is naturally present in cysteine and methionine amino acids, which can be detected by inductively coupled plasma mass spectrometry(ICP-MS). It is also an important element required for plant growth, since it is useful in lowering the pH of the soil.

Informations sur la sécurité

• Pictogrammes: GHS07
• Mention d'avertissement: Warning
• Mentions de danger: H315
• Conseils de prudence: P264 - P280 - P302 + P352 - P332 + P313 - P362 + P364
• Classification des risques: Skin Irrit. 2
• Code de la classe de stockage: 4.1B - Flammable solid hazardous materials
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable