有谁会计算96 95 94 93 92 91 6 5 4 3 2 1等于多少
有谁会计算96 95 94 93 92 91 6 5 4 3 2 1等于多少
09-03-08 &匿名提问
设S=96+95+……+2+1①把上式的顺序倒过来S=1+2+……+95+96②①+②得2S=(96+1)+(95+2)+……+(2+95)+(1+96)=97×96S=97×96/3=4556
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有一片牧场草长得一样快，已知24头牛可吃6天，或21头...CAS No. 95-93-2 (1,2,4,5-Tetramethylbenzene )
Molecular Formula: C10H14Molecular Weight: 134.22
Identification of 95-93-2
Molecular Formula:
CAS Registry Number:
1,2,4,5-Tetramethylbenzene (Durene)
InChI=1/C10H14/c1-7-5-9(3)10(4)6-8(7)2/h5-6H,1-4H3
Molecular Structure:
This structure is also available as a
Chemical Properties
Appearance:
white crystalline powder
Molecular Weight:
Boiling Point:
Melting Point:
Flash Point:
Storage Temperature:
Flammables area
Refractive index:
1.4790 (81 C)
Solubility:
Stability:
Stable under normal temperatures and pressures. Volatile in steam.
Safety Data of 95-93-2
Risk Codes:
Safety Statements:
Hazard Symbols:
F:Flammable
HazardClass:4.1
MSDS infomation:
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Durene （ 1,2,4,5-Tetramethyl Benzene ） 1,2,4,5-Tetramethylbenzene Brief introduction Durene is made of reformate C10 aromatics through distilling crystallizing and separating. It is mainly used in producing PMDA. Pharmaceutical intermediates, polymide resin, plasticizers, dye, surfactant, etc. Molecular formula: C10H14 Specification No...
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DetailDesc: 1,2,4,5-Tetramethylbenzene CAS：95-93-2 Appearance：White monoclinic crystal Usage：Polyimide resin, used in the production of dyes, plasticizer, surface active agent, etc
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DetailDesc: Name: 1,2,4,5-Tetramethylbenzene EINECS:202-465-7 Molecular Formula:C10H14 CAS No.:95-93-2 Synonyms:D 1,2,4,5-Tetramethylbenzene (Durene) InChI：InChI=1/C10H14/c1-7-5-9(3)10(4)6-8(7)2/h5-6H,1-4H3 Molecular Weight:134.22 Density:0.838 Name:1,2,4,5-Tetramethylbenzene Water solubility: insoluble Boiling Point:196-197 ℃ Melting Point:76-82 ℃ Appearance:white crystalline powder Stability:Stabl...
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DetailDesc: Quick Details CAS No.: 95-93-2 Melting Point: 78 &C Boiling Point: 192 &C at 760 mmHg Flash Point: 73.9 &C Solubility: insoluble in water Appearance: white crystalline powder Risk Codes: 11 Safety: 16 Transport Information: UN /PG 2 Assay: 99.5 Specifications Acute toxicity performance: rats LD50 5 ml through the mouth/kg, guinea pigs for abdominal MLD 1303 mg/kg, the person's...
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DetailDesc: Quick Details CAS No.: 95-93-2 Melting Point: 78 &C Boiling Point: 192 &C at 760 mmHg Flash Point: 73.9 &C Solubility: insoluble in water Appearance: white crystalline powder Risk Codes: 11 Safety: 16 Transport Information: UN /PG 2 Assay: 99% Specifications Quick DetailsCAS No.: 95-93-2 Other Names: Durene MF: C10H14 EINECS No.: 202-465-7 Place of Origin: Shandong China (Main...
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DetailDesc: Quick Details CAS No.: 95-93-2 Melting Point: 78 &C Boiling Point: 192 &C at 760 mmHg Flash Point: 73.9 &C Solubility: insoluble in water Appearance: white crystalline powder Risk Codes: 11 Safety: 16 Transport Information: UN /PG 2 Assay: 97%min Exterior: White semi-transparent crystals Specifications 1. Product Name: 1,2,4,5-Tetramethylbenzene 2. MF: C10H14 3. Grade Standard...
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DetailDesc: Quick Details CAS No.: 95-93-2 Melting Point: 78 &C Boiling Point: 192 &C at 760 mmHg Flash Point: 73.9 &C Solubility: insoluble in water Appearance: white crystalline powder Risk Codes: 11 Safety: 16 Transport Information: UN /PG 2 Specifications 1,2,4,5-Tetramethylbenzene 4, 1,2,4,5-Tetramethylbenzene Molecualr formula: C10H14 Structural formula : CAS: 95-93-2 4.1 Quality in...
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References of 1,2,4,5-Tetramethylbenzene cas 95-93-2
orl-rat LD50:6989?mg/kg
DCTODJ ?? Drug and Chemical Toxicology. 1 (.
ivn-mus LD50:180?mg/kg
CSLNX* ?? U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) NX#00212 .
Poison by intravenous route. Mildly toxic by ingestion. When heated to decomposition it emits acrid smoke and irritating fumes.
Safety Information of 1,2,4,5-Tetramethylbenzene (CAS NO.95-93-2):
Hazard Codes:
F: Flammable
Risk Statements:
R11 Highly flammable.
Safety Statements:
S16 Keep away from sources of ignition - No smoking.
Attentions:
1. Storage: Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
2. Handling: Avoid ingestion and inhalation. Avoid contact with heat, sparks and flame. Avoid contact with eyes, skin, and clothing. Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Minimize dust generation and accumulation. Use spark-proof tools and explosion proof equipment. Keep container tightly closed. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Keep from contact with moist air and steam.
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