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Home > Encyclopedia > Potassium sulfite

Potassium sulfite

Potassium sulfite structure

Potassium sulfite 

structure
  • CAS No:

    10117-38-1

  • Formula:

    H2O3S.2K

  • Chemical Name:

    Potassium sulfite

  • Synonyms:

    Sulfurous acid,potassium salt (1:2);Potassium sulfite (K2SO3);Sulfurous acid,dipotassium salt;Dipotassium sulfite;Potassium sulfite;126048-06-4

  • Categories:

    Cosmetic Ingredient  >  Antioxidant Ingredient

Description

Liquid

Potassium sulfite Basic Attributes

158.26

157.884232

233-321-1

015KZC652E

2832200000

Characteristics

82.4

-0.13840

Liquid

White crystals or crystalline powder; sol in about 3.5 parts water; decomposed by diluted acids with evolution of sulfur dioxide; pH about 8 /dihydrate/|White-yellowish, hexagonal form; insol in ammonia; slightly sol in alcohol /dihydrate/

KEEP WELL CLOSED IN COOL PLACE. /DIHYDRATE/

Decomposes on heating /dihydrate/

Safety Information

NONH for all modes of transport

1

36/37/38-31

26-36

Xi

GRADUALLY OXIDIZES IN AIR TO SULFATE. /DIHYDRATE/

P264, P270, P280, P301+P312, P305+P351+P338, P310, P330, P501

H302

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

|Warning|H315 (54.44%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 289 companies from 9 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|Danger|H302: Harmful if swallowed [Warning Acute toxicity, oral]|P264, P270, P280, P301+P312, P305+P351+P338, P310, P330, and P501

Toxicity

Some asthmatics are said to be dangerously sensitive to minute amounts of sulfites in foods. /Sulfites/

Drug Information

TOXICITY RATINGS: 3. 3= MODERATELY TOXIC: PROBABLE ORAL LETHAL DOSE (HUMAN) 0.5-5 G/KG, BETWEEN 1 OZ & 1 PINT (OR 1 LB) FOR 70 KG PERSON (150 LB). /SULFITE SALTS/

TREATMENT IS SYMPTOMATIC & SUPPORTIVE. /SULFITE SALTS/|Basic treatment: Establish a patent airway. Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Anticipate seizures and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with normal saline during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 m1/kg up to 200 ml of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool ... . Administer activated charcoal ... . Cover skin burns with dry sterile dressings after decontamination ... . /Sulfur and related compounds/|Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious. Early intubation at the first sign of upper airway obstruction may be necessary. Monitor cardiac rhythm and treat arrhythmias if necessary ... . Start an IV with D5W /SRP: "To keep open", minimal flow rate/. Use lactated Ringer's if signs of hypovolemia are present. Watch for signs of fluid overload. Consider drug therapy for pulmonary edema ... . Treat seizures with diazepam (Valium) ... . For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors for hypotension with a normal fluid volume. Watch for signs of fluid overload ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Sulfur and related compounds/

WHEN INGESTED, SOLN CAUSE GASTRIC IRRITATION BY LIBERATION OF SULFUROUS ACID. BECAUSE OF RAPID OXIDATION TO SULFATE, SULFITES ARE WELL TOLERATED UNTIL LARGE DOSES ARE REACHED; THEN VIOLENT COLIC & DIARRHEA, CIRCULATORY DISTURBANCES, CENTRAL NERVOUS DEPRESSION, & DEATH ARE DESCRIBED. /SULFITE SALTS/

Potassium sulfite Use and Manufacturing

Methods of Manufacturing

Pour sulfur dioxide into the potassium carbonate aqueous solution, make it saturated, add the same amount of sodium carbonate, and obtain it by evaporation and crystallization.

Uses

Used as a general reagent, also used in the photographic industry


Agricultural chemicals (non-pesticidal)


Agricultural products (non-pesticidal)

Production

10,000,000 - 50,000,000 lb|(1977) No Data|(1979) No Data

Grades: technical; CP; FCC.

All other basic inorganic chemical manufacturing|Sulfurous acid, potassium salt (1:2): ACTIVE

Cosmetics -> Preservative; Reducing

Food Additives -> ANTIOXIDANT; PRESERVATIVE;

Computed Properties

Molecular Weight:158.26
Hydrogen Bond Acceptor Count:4
Exact Mass:157.88422800
Monoisotopic Mass:157.88422800
Topological Polar Surface Area:82.4
Heavy Atom Count:6
Complexity:18.8
Covalently-Bonded Unit Count:3
Compound Is Canonicalized:Yes

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