Huagongshe화공사 화학 정보 인쇄 보고서 · 연구 참고용
규산소다
가용유리 · 규조 · 나트륨규산염유리 · 나트륨물유리 · 나트륨베타-규산염 · 나트륨세스퀴실리케이트 · 물유리 · 실리콘나트륨산화물
식별자 및 물리적 특성
| CAS No. | 1344-09-8 |
|---|---|
| 분자식 | Na2O3Si |
| 평균 분자량 | 122.063 g/mol |
| 단동위원소 질량 | 121.94120895 g/mol |
| SMILES | O=[Si]([O-])[O-].[Na+].[Na+] |
| InChIKey | NTHWMYGWWRZVTN-UHFFFAOYSA-N |
| PubChem CID | 23266 |
| ChEBI | CHEBI:60720 |
| EC No. | 215-687-4 |
| DTXSID | DTXSID7029669 |
| 현지명 | 규산소다 |
화학 및 물리적 성질
| 극성 표면적 | 63.2 |
|---|---|
| 수소 결합 공여자 수 | 0 |
| 수소 결합 수용자 수 | 3 |
| 회전 가능 결합 수 | 0 |
| 무거운 원자 수 | 6 |
| 형식 전하 | 0 |
| 복잡도 | 18.8 |
| 물질 분류 | Other Classes -> Salts, BasicMetals -> Metals, Inorganic Compounds |
| Polymers | Plastics -> N.a. |
| 화장품 | Cosmetic ingredients (Sodium Metasilicate) -> CIR (Cosmetic Ingredient Review)Cosmetic ingredients (Sodium Silicate) -> CIR (Cosmetic Ingredient Review)AnticorrosiveBufferingChelating |
| pH | PH: ABOUT 12.5HAS RELATIVELY HIGH BUFFER CAPACITY /0.5% SOLUTION/AQ SOLN ARE STRONGLY ALKALINE13.5 (20°C in H2O) |
| 식품 첨가물 | Use unspecified -> FDA Substance added to foodANTICAKING AGENT OR FREE-FLOW AGENT, DRYING AGENT, HUMECTANT, PROCESSING AID -> FDA Substance added to food |
| 밀도 | 1.1 to 1.7 at 68 °F (USCG, 1999)2.614Relative density (water = 1): 1.41.1 to 1.7 @ 15°C2.33 g/mL at 25 °C(lit.) |
| Color/Form | COLORLESS MONOCLINIC CRYSTALSUSUALLY OBTAINED AS A GLASSALSO ORTHORHOMBIC CRYSTALSDUSTLESS WHITE GRANULESCOLORLESS TO WHITE OR GRAYISH-WHITE, CRYSTAL-LIKE PIECES OR LUMPSLUMPS OF GREENISH GLASSWHITE POWDERSLIQUIDS CLOUDY OR CLEAR |
| 용해도 | VERY SOL IN COLD & HOT WATERSOLUBLE IN DILUTE SODIUM HYDROXIDEINSOLUBLE IN ALCOHOL, ACIDS /NONAHYDRATE/SOL IN WATERINSOL IN ALCOHOLINSOL IN ACIDS, SALT SOLNIn commerce mole ratios of SiO2 to Na2O vary from 1.5 to 3.3. ... The higher the ratio (e.g., the less sodium) the lower the solubility and alkalinity.VERY SLIGHTLY SOL OR ALMOST INSOL IN COLD WATERLESS READILY SOL IN LARGE AMT OF WATER THAN IN SMALL AMTANHYD DISSOLVE WITH MORE DIFFICULTY THAN HYDRATE IN WATERGLASS FORM SOL IN STEAM UNDER PRESSUREPARTIALLY MISCIBLE WITH PRIMARY ALC & KETONESMISCIBLE WITH SOME POLYHYDRIC ALCH2O: 용해성 |
| Corrosivity | Sodium metasilicate is considered to be too corrosive to be widely used in consumer product laundering formulations. |
| 끓는 점 | BOILING POINT: 100 °C -6H20 /NONAHYDRATE/102 °C @760 [mm Hg]2355 °C(lit.) |
| Decomposition | Solutions of sodium metasilicate, when heated or acidified, are hydrolyzed to free sodium ions and silicic acid. |
| 녹는점 | 1089 °CMELTING POINT: 48 °C IN WATER OF CRYSTALLIZATIONHEAT OF HYDRATION: -24.15 KCAL/MOLEEFFLORESCENTORTHORHOMBIC BIPYRAMIDAL PLATELETS /NONAHYDRATE/1410 °C(lit.) |
| 굴절률 | 1.520 |
| 저장 조건 | -20°C |
| 물리적 상태 | 가루 |
| 색상 | 무색의 |
| 냄새 | Odorless |
| 생물학적 소스 | mouse |
| 용해도 | 매우 약간 용해되는 차가운 H2O [MER06] |
| Merck | 13,8751 |
| 유전율 | 16.0(Ambient) |
| 안정성 | 안정적인. 산, 대부분의 금속, 많은 유기 물질과 호환되지 않습니다. |
| 화장품 원료 기능 | 버퍼링부식 방지 |
| InChIKey | NTHWMYGWWRZVTN-UHFFFAOYSA-N |
| EPA | Sodium silicate (1344-09-8) |
화학적 성질
Sodium silicate,NA2Si03 also known as a liquid glass, silicate of soda, sodium metasilicate, and soluble glass, is a grayish-white crystalline powder that has a melting point of 1088 °C (1990 °F). It is soluble in water and has strong detergent and emulsifying properties. Sodium silicate is used to fireproof textiles, insulate electric wire, protect wood and porous stone, grease proof paper containers, and as a catalyst in refining high-octane gasoline.
안전 및 규제
| GHS 분류 | DangerH314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]P260, P261, P264, P271, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P319, P321, P363, P403+P233, P405, and P501 (click each P-code to see the statement)This chemical does not meet GHS hazard criteria for 7.2% (290 of 4043) of reports.H290 (13.9%): May be corrosive to metals [Warning Corrosive to Metals] |
|---|---|
| 규제 정보 | Chemical: Silicic acid (H2SiO3), disodium saltChemical: Silicic acid, sodium saltRegulation (EC) No 178/2002 (amended)Silicic acid, sodium salt is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Silicic acid, sodium salt are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Silicic acid (H2SiO3), sodium salt (1:2) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Silicic acid (H2SiO3), sodium salt (1:2) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Status: Active Update: 31-03-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/16162 |
| 기타 안전 정보 | IMAP assessments - Silicic acid (H2SiO3), disodium salt: Environment tier I assessmentIMAP assessments - Soluble silicates: Human health tier II assessment |
| 운송 라벨(DOT) | Corrosive |
| 화재 위험 | Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:Not combustible. |
| 화재 가능성 | Flammable solid. /Silicon powder, amorphous/ |
| 건강 유해성 | If large doses are ingested, some irritation of mucous membranes may occur, similar to that caused by caustic soda solution. (USCG, 1999) |
| 유해성 요약 | General term for a group of compounds with varying quantities of sodium oxide (Na2-O) and silica (Si2-O)Aqueous solutions are characterized by the weight ratio of silica to sodium oxide, usually 1.6 to 3.8Solutions are strongly alkaline and corrosive[Merck Index] A strong skin and eye irritantToxic by ingestion at high doses[CAMEO] A medium strong base in solution25-50% Aqueous solution: Aerosol is a skin, eye, and respiratory tract irritant[ICSC] Corrosive to rabbit skin (when tested at 53.5% molar ratio of 1.6 and 82% molar ratio of 2.4)Sodium metasilicate was not sensitizing in a local lymph node assay study of miceSimilar uses and adverse effects are expected from the hydrous and anhydrous forms (Sodium metasilicate pentahydrate, Sodium metasilicate nonahydrate, Sodium metasilicate, Sodium silicate, and Potassium silicate). The main hazard of soluble silicates is their alkalinity and potentially corrosive effects on metal and tissue. [Ullmann]A corrosive substance that can cause injury to the skin, eyes, and respiratory tract[ICSC] A strong skin, eye, and mucous membrane irritant[CAMEO] Causes burnsA respiratory tract irritant[IUCLID] In high-dose, 4-week feeding studies of dogs and rats, polydipsia and polyuria were observedDogs but not rats had renal lesionsOral LD50 (rat) = 1280 mg/kg (10% solution)[HSDB] pH of 1% solution = 13[IPCS-PIMs] No reports on reproductive effects[REPROTOX] Corrosive to moistened rabbit skinNot sensitizing in a local lymph node assay study of miceSimilar uses and adverse effects are expected from the hydrous and anhydrous forms (Sodium metasilicate pentahydrate, Sodium metasilicate nonahydrate, Sodium metasilicate, Sodium silicate, and Potassium silicate). One case of occupational contact urticaria reported from sodium silicate[OECD SIDS: Soluble Silicates - 2004] A severe skin irritantHuman ingestion of 1 mL/kg causes changes in tubules (including acute renal failure and necrosis), hematuria, and nausea or vomiting[RTECS] Causes burnsInhalation may cause corrosive injuries to upper respiratory tract and lungs[Alfa Aesar MSDS] |
| FDA 요건 | Substance added directly to human food affirmed as generally recognized as safe (GRAS). |
| 반응성 그룹 | Salts, Basic |
| EPA Safer Chemical | Chemical: Sodium metasilicateChemical: Sodium silicate |
| FIFRA 요건 | As the federal pesticide law FIFRA directs, EPA is conducting a comprehensive review of older pesticides to consider their health and environmental effects and make decisions about their future use. Under this pesticide reregistration program, EPA examines health and safety data for pesticide active ingredients initially registered before November 1, 1984, and determines whether they are eligible for reregistration. In addition, all pesticides must meet the new safety standard of the Food Quality Protection Act of 1996. Pesticides for which EPA had not issued Registration Standards prior to the effective date of FIFRA, as amended in 1988, were divided into three lists based upon their potential for human exposure and other factors, with List B containing pesticides of greater concern and List D pesticides of less concern. Sodium metasilicate is found on List D. Case No: 4081Pesticide type: insecticide, fungicide, antimicrobialCase Status: RED Approved 09/91OPP has made a decision that some/all uses of the pesticide are eligible for reregistration, as reflected in a Reregistration Eligibility Decision (RED) document.Active ingredient (AI): Sodium metasilicateAI Status: OPP has completed a Reregistration Eligibility Decision (RED) document for the case/AI.As a general rule, pesticide chemicals other than ..., sodium metasilicate (not to exceed 4% by weight in aqueous solution)... are not for the purposes of section 408(a) of the Act generally recognized as safe.Residues of sodium metasilicate are exempted from the requirement of a tolerance when used as a surfacant, emulsifier, wetting agent, suspending agent, dispersing agent, or buffer in accordance with good agricultural practices as inert (or occasionally active) ingredients in pesticide formulations applied to growing crops or to raw agricultural commodities after harvest.Residues of sodium silicate are exempted from the requirement of a tolerance when used as a surfactant, emulsifier, wetting agent, stabilizer, or inhibitor in accordance with good agricultural practices as inert (or occasionally active) ingredients in pesticide formulations applied to growing crops or to raw agricultural commodities after harvest. |
| Reactivity Profile | SODIUM SILICATE contains a variable amount of water of hydration. Rate of dissolution depends on the degree of hydration, the amount of water that is used as solvent (less soluble in large amounts of water) and the temperature (higher temperature means quicker solution). Aqueous solutions react as bases. Reacts violently with fluorine [Lewis.] |
| 소화 | Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:In case of fire in the surroundings, use appropriate extinguishing media. |
| 응급 조치 | Fresh air, rest.First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. Refer for medical attention .First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.Rinse mouth. Give one or two glasses of water to drink. Do NOT induce vomiting. Refer for medical attention . |
| 응급 처치 | INGESTION (large doses): give water or milkdo NOT induce vomiting. (USCG, 1999) |
| 안전 보관 | Separated from strong acids, aluminium and zinc. |
| 비화재 누출 대응 | Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: |
| 처리 방법 | 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. |
| 누출 처리 | Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Personal protection: self-contained breathing apparatus. |
| Preventive Measures | SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place. |
| Isolation and Evacuation | Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: |
| Eye Prevention | Wear face shield. |
| Inhalation Risk | Evaporation at 20 °C is negligiblea harmful concentration of airborne particles can, however, be reached quickly on spraying. |
| Skin Prevention | Protective gloves. |
| 유해 작용 | Dermatotoxin - Skin burns.Nephrotoxin - The chemical is potentially toxic to the kidneys in the occupational setting. |
| 노출 경로 | The substance can be absorbed into the body by inhalation and by ingestion. |
| 독성 요약 | The Expert Panel for Cosmetic Ingredient Safety concluded that the following 24 silicate ingredients are safe in cosmetics in the present practices of use and concentration described in this safety assessment when formulated to be non-irritating, with the exception that the available data are insufficient to make a determination of safety for the use of naturally-sourced (i.e., mined) silicate ingredients in products that may be incidentally inhaled: Sodium Metasilicate.Safe for use in cosmetics, with qualificationsThe Expert Panel for Cosmetic Ingredient Safety concluded that the following 24 silicate ingredients are safe in cosmetics in the present practices of use and concentration described in this safety assessment when formulated to be non-irritating, with the exception that the available data are insufficient to make a determination of safety for the use of naturally-sourced (i.e., mined) silicate ingredients in products that may be incidentally inhaled: Sodium Silicate. |
| Signs and Symptoms | Cough. Sore throat.Redness. Pain.Diarrhoea. Nausea. Vomiting. |
| Human Toxicity Excerpts | A 57 yr old man had had recurrent ulcerative lesions on his left hand for 2 yr. The ulcers were associated with chronic eczematous changes resulting from primary irritant contact dermatitis to sodium silicate, as indicated by positive patch tests. He used sodium silicate in a dyeing process in his work. He also had contact urticaria. An immediate wheal and flare reaction was found 15 min after application of sodium silicate to a scratch test site. This response was not seen in healthy control subjects.MORE...CAUSTIC THAN SODIUM SILICATE. ... /IT IS/ THE MOST ALKALINE & CORROSIVE SUBSTANCE IN.../PHOSPHATE-FREE & LOW-PHOSPHATE LAUNDRY DETERGENTS & DISHWASHER PRODUCTS/.IRRITATING & CAUSTIC TO SKIN, MUCOUS MEMBRANES. IF SWALLOWED CAUSES VOMITING & DIARRHEA.Upper airway irritation, fever/hyperthermia (metal fume fever), leukocytosis (metal fume fever).ACCIDENTAL SPLASHES IN EYE FOLLOWED PROMPTLY BY WASHING WITH WATER HAVE BEEN OBSERVED TO DAMAGE THE CORNEAL EPITHELIUM. |
| Non-Human Toxicity Excerpts | ORAL PREPN OF SODIUM METASILICATE WERE FED TO YOUNG ADULT BEAGLE DOGS AND YOUNG RATS OF BOTH SEXES FOR 4 WK. POLYDIPSIA, POLYURIA & SOFT STOOLS RESULTED IN SOME ANIMALS. GROSS & MICROSCOPIC RENAL LESIONS OBSERVED IN DOGS BUT NOT IN RATS.... /In/ studies of detergent emesis in 11 dogs by gastric intubation ... 8 mg/kg as a 10.5% aqueous solution of a sodium silicate (SiO2:Na2O= 3.2:1) produced emesis in 6 minutes which continued for up to 33 minutes.Sodium metasilicate is used with sodium carbonate in heavy duty alkaline laundry detergents. In rabbits this type of detergent causes damage to the cornea, with opacification, proportional to the alkalinity of the preparation. Irrigation of the eye with water must be done within 60 seconds to reduce the severity of injury.The ip injection in rats of the nonahydrate as a neutral solution in amounts of 300 mg on day 1 and 200 mg on days 2 and 3 produced lesions in the spleen and lymph nodes and caused mitotic changes in the nuclie of cells resembling those from ionizing radiation or hypoxia. /Nonahydrate/For more Non-Human Toxicity Excerpts (Complete) data for SODIUM METASILICATE (6 total), please visit the HSDB record page.Mussels are controlled on water inlets, underwater substructures, ditches, etc by asphyxiation subsequent to coating with a hydrogel made of sodium silicate. Furthermore, algae and aquatic plants can be eliminated by addition of herbicides to the hydrogel. ... Water glass, diluted 1:2, with pH adjusted to 7.4, controlled mussels in a water inlet. |
| Non-Human Toxicity Values | LD50 Rat oral 1280 mg/kgLD50 Mouse oral 2400 mg/kgLD50 Rat oral 1.1 - 1.6 g/kgLD50 Mouse oral 1,100 mg/kg |
| 수질 위해 등급(WGK) | 2 |
| TSCA 등재 상태 | TSCA listed |
| RTECS 번호 | VW0400000 |
| 운송 번호(UN) | UN 2922 8/PG 2 |
| 독성 | LD50 oral in rat: 1960mg/kg |
| 관세 코드 | 28391910 |
| 위험 문구(R) | 11-36/38-34-23/24/25-36/37/38-35-20/21/22-37 |
| 위험 표시 | F,Xi,T,C |
| 안전 문구(S) | 26-36/37-45-7/9-28-36/37/39-36-27 |
| 포장분류 | II |
| 위험 등급 | 8 |
| 기존화학 물질 | KE-31002 |
| F 고인화성물질 | 34 |
| 저장 분류 | 10 - Combustible liquids |
| 유해 물질 데이터 | 1344-09-8(Hazardous Substances Data) |
용도
용도
액상규산염은 지관, 합지 및 기타 여러 가지 재료의 접착제로 사용되고 있습니다. 액상규산나트륨은 초기 작업성 및 접착성, 접착강도가 우수한 경제적인 접착제입니다.제지산업에서 액상규산나트륨은 탈묵제(de-inking), 사이징제,코팅제, 표백제로 사용되고 있습니다.
개요
Sodium silicate, 2Na2OSiO2, is the simplest form of glass. It is found as lumps of greenish glass soluble in steam under pressure, white powders of varying degrees of solubility, or liquids cloudy or clear. It is noncombustible; however, when the powdered form is suspended in air, it could cause a dust explosion if an ignition source is present. Breathing the dust may also cause health problems. The glass form could also create a hazard to responders in an accident. It is not listed as a hazardous material in the DOT Hazardous Materials Tables. The primary uses are as catalysts, soaps, adhesives, water treatment, bleaching, waterproofing, and flame retardant.
용도
Sodium Silicate is a product used as a preservative for eggs.