CN1119078C - Synergistic dimethoate emulsifiable concentrate - Google Patents
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Abstract
The present invention relates to a synergistic dimethoate emulsifiable solution which is prepared by that dimethoate, a solvent of ferment or benzene or aldehyde, etc., and synergistic phosphorus are mixed according to a certain proportion in a mixing pot to obtain the product through emulsification technology. Particularly, 12% of the synergistic dimethoate emulsifiable solution of the present invention has the equivalent prevention effect to 40% of the dimethoate emulsifiable solution, but the content of effective components of the medicament is lower than that of dimethoate. Therefore, the synergistic dimethoate emulsifiable solution has no phytotoxicity to crops and performs an effective protection function for human environments. Field pharmacodynamic tests and animal toxicological tests prove that the synergistic dimethoate emulsifiable solution is a pesticidal product which has the advantages of low toxicity, high safety, favorable pesticidal effect, economical production, low price, simple and convenient use, etc.
Description
The present invention relates to a kind of agricultural chemicals, particularly directly apply to a kind of dimethoate emulsifiable concentrate insecticide of agricultural production.It has insecticidal action preferably to crops such as wheat, cotton, paddy rice, citrus, tobacco, vegetables, mainly prevents insect pests such as aphid, mite, snout moth's larva, oriental tobacco budworm.
(raw material is made up of the former medicine of Rogor, organic solvent, emulsifier to have a kind of common insecticide 40% dimethoate emulsifiable concentrate that directly applies to agricultural production now, adopt the kinds of surface activating agent, get through the emulsification decentralized system), its good disinsection effect, but belong to the higher moderate toxicity chemical pesticide of organic phosphor content (being pesticide active ingredient).Because a large amount of uses of chemical pesticide product have stronger toxic and side effect to human environment.Another kind of insecticide 36% height oozes dimethoate emulsifiable concentrate (to be made up of dimethoate emulsifiable concentrate, emulsified solvent and bleeding agent, adopt mixing, emulsifying process to make), though reduced organic phosphor content, and good disinsection effect, but the agricultural chemicals organic phosphor is still higher, and the use of this product is still to the human environment toxic side effect; Also have, because of the pesticide adjuvant employing bleeding agent of product, so the price height, peasant's medication is difficult to accept, and is difficult for promoting the use of.
Purpose of the present invention is intended to overcome the shortcoming of above-mentioned insecticide, the applicant is on the basis of 40% dimethoate emulsifiable concentrate, through reaching several years concentrate on studies and field control effectiveness test repeatedly, successfully develop a kind of not only organic phosphorus content low, but also good disinsection effect and cheap Synergistic dimethoate emulsifiable concentrate.It does not have poisoning to crops, has the identical desinsection drug effect of 40% dimethoate emulsifiable concentrate, plays the effect of protection human environment effectively.
The objective of the invention is to realize by this way: raw material is made up of Rogor that plays insecticidal action and the pesticide adjuvant that the solvent that plays emulsification has reached synergistic effect, raw material is mixed making product through emulsifying process in mixing kettle.Its Rogor adopts dimethoate emulsifiable concentrate, and emulsified solvent is alcohols or benzene class or aldehyde material, and adjuvant is a synergy phosphorus, and raw material % meter proportioning by weight is:
40% dimethoate emulsifiable concentrate 20-50%,
Alcohols or benzene class or aldehydes solvent 40-78%,
Synergy phosphorus 1-20%.
Described raw material % meter proportioning by weight is (product that this raw material proportioning makes is 12% Synergistic dimethoate emulsifiable concentrate):
40% dimethoate emulsifiable concentrate 30%
Alcohols or benzene class or aldehydes solvent 55-65%,
Synergy phosphorus 5-15%.
Described alcohols material is wherein a kind of of methyl alcohol, ethanol, ethylene glycol.
Described raw material is % meter proportioning by weight: 40% dimethoate emulsifiable concentrate 30%, methyl alcohol or ethanol 65%, synergy phosphorus 5%.The product that this raw material proportioning makes is 12% Synergistic dimethoate emulsifiable concentrate.
Described benzene class material is wherein a kind of of thick benzene,toluene,xylene.
Described aldehyde material is wherein a kind of of formaldehyde, propionic aldehyde, hutanal, glyoxal.
Described solvent can also be acetone or butanone.
Described solvent can also be formic acid or glacial acetic acid.
The chemical name of synergy phosphorus: O, O-diethyl-O-phenyl thiophosphate.
The remarkable result that Synergistic dimethoate emulsifiable concentrate of the present invention has is: reduced organic phosphor content significantly, and all better to control crop pests quick-acting and lasting effect.Especially the present invention's 12% Synergistic dimethoate emulsifiable concentrate is suitable with existing 40% dimethoate emulsifiable concentrate preventive effect, but medicament active ingredient is low than the Rogor consumption, and toxic and side effect is little, and crop is not had poisoning, and human environment is had protective effect; Because pesticide adjuvant adopts synergy phosphorus, it is low to make product price ooze dimethoate emulsifiable concentrate than 36% height, so peasant's medication price can be accepted, easily applies.This Synergistic dimethoate emulsifiable concentrate is through field control effectiveness test and animal toxicology evidence: the chemical pesticide product that is a kind of low toxicity, safety, environmental protection, good disinsection effect.
Below with regard to enforcement of the present invention, the test example further specify:
Embodiment one:
Get 200 kilograms of 40% dimethoate emulsifiable concentrates, 700 kilograms of alcohols materials (methyl alcohol or ethanol or ethylene glycol), 100 kilograms in synergy phosphorus.Production method: the mixing, the emulsifying process that adopt known preparation agricultural chemicals.Earlier dimethoate emulsifiable concentrate is put mixing kettle, add alcohols material again, (reinforced order can be in no particular order to add synergy phosphorus at last, or add simultaneously all can), the limit edged stirs, through emulsifying process (mixing kettle being heated 5-45 ℃, time 15-45 minute), make about 1000 kilograms of Synergistic dimethoate emulsifiable concentrate products.Rogor effective ingredient 〉=8% of this product.
Emulsifying process also can carry out at normal temperature.
Alcohols material can also be wherein a kind of of n-butanol, octanol, isobutanol, abienol, mixed alcohol except that methyl alcohol, ethanol, ethylene glycol.
Embodiment two:
Get 300 kilograms of 40% dimethoate emulsifiable concentrates, methyl alcohol or ethanol ((industrial alcohol, edible ethanol all can)) 50 kilograms of 650 kilograms, synergy phosphorus.Production method is controlled at the mixing kettle temperature about 30 ℃ with embodiment one, about 30 minutes time, makes about 1000 kilograms of 12% Synergistic dimethoate emulsifiable concentrate products.This product is the light brown homogeneous liquid, and its index is: Rogor effective ingredient 〉=12%, synergy phosphorus content 〉=5.0%, moisture≤0.4%, acidity (with sulphur acid meter)≤0.3%, missible oil stability and low-temperature stability and heat storage stability are all qualified.
Embodiment three:
Get 400 kilograms of 40% dimethoate emulsifiable concentrates, 500 kilograms of benzene class materials (crude benzol or toluene or dimethylbenzene etc.), 100 kilograms in synergy phosphorus.Production method makes about 1000 kilograms of Synergistic dimethoate emulsifiable concentrate products with embodiment one.Rogor effective ingredient 〉=16% of this product.
Embodiment four:
Get 300 kilograms of 40% dimethoate emulsifiable concentrates, 550 kilograms of benzene class materials (crude benzol or toluene or dimethylbenzene), 150 kilograms in synergy phosphorus.Production method makes about 1000 kilograms of 12% Synergistic dimethoate emulsifiable concentrate products with embodiment one (mixing kettle being heated 25-40 ℃, time 20-40 minute).Rogor effective ingredient 〉=12% of this product.
Benzene class material can also be wherein a kind of of ethylbenzene, alkylbenzene, benzene mixed, ortho-xylene, meta-xylene except that thick benzene,toluene,xylene.
Embodiment five:
Get 480 kilograms of 40% dimethoate emulsifiable concentrates, 400 kilograms of aldehyde materials (formaldehyde or propionic aldehyde or hutanal or glyoxal), synergy phosphorus 120 kg.Production method makes about 1000 kilograms of Synergistic dimethoate emulsifiable concentrate products with embodiment one.The Rogor effective ingredient about 18% of this product.
Embodiment six:
Get 220 kilograms of 40% dimethoate emulsifiable concentrates, acetone or 760 kilograms of butanone, 20 kilograms in synergy phosphorus.Production method makes about 1000 kilograms of Synergistic dimethoate emulsifiable concentrate products with embodiment one.The Rogor effective ingredient about 10% of this product.
Embodiment seven:
Get 300 kilograms of 40% dimethoate emulsifiable concentrates, formic acid or 600 kilograms in glacial acetic acid, 10 kilograms in synergy phosphorus.Production method makes about 1000 kilograms of 12% Synergistic dimethoate emulsifiable concentrate products with embodiment one.Rogor effective ingredient 〉=12% of this product.
Embodiment eight:
Get 300 kilograms of 40% dimethoate emulsifiable concentrates, acetone or 680 kilograms of butanone, 20 kilograms in synergy phosphorus.Production method is controlled at mixing kettle about 40 ℃ with embodiment one, about 25 minutes time, makes about 1000 kilograms of 12% Synergistic dimethoate emulsifiable concentrate products.Rogor effective ingredient 〉=12% of this product.
Embodiment nine:
Get 300 kilograms of 40% dimethoate emulsifiable concentrates, formaldehyde or 550 kilograms of propionic aldehyde, 150 kilograms in synergy phosphorus.Production method makes about 1000 kilograms of 12% Synergistic dimethoate emulsifiable concentrate products with embodiment one.Rogor effective ingredient 〉=12% of this product.
Test 1: to preventing the wheat aphid test
Will be by the foregoing description two prepared 12% Synergistic dimethoate emulsifiable concentrates and the contrast of 40% dimethoate emulsifiable concentrate, rise town's wheat aphid the important place takes place throughout the year carries out field control effectiveness test (take place heavylier for examination ground wheat aphid, CK nature aphid amount is up to 33.7-45.4 head/strain in Shuangliu County, Sichuan east; The examination district is provided with 4 repetitions, randomized arrangement; Wheat is in the pustulation period during dispenser), test effect sees Table 1 (being 4 repetition mean values in the table).Show from result of the test: this Synergistic dimethoate emulsifiable concentrate is used to prevent and treat wheat ear aphid quick-acting and lasting effect is all better.The heavier time takes place aphid, behind the medicine 1-7 days preventive effects all more than 95%, suitable with 40% dimethoate emulsifiable concentrate pharmacy control efficacy, but medicament effective ingredient consumption Rogor is low, and wheat is not had poisoning.Control wheat aphid spraying dosage is advisable with product volume 100-167ml (300-500 doubly) or per hectare 180-300.6 gram with mu.
Test 2: to preventing the test of wheat head aphid
Will be by the foregoing description two prepared 12% Synergistic dimethoate emulsifiable concentrates and the contrast of 40% dimethoate emulsifiable concentrate, experimental field carrying out field control effectiveness test in department of agriculture of Shaanxi Yangling District Xibei Univ. of Agricultural ﹠ Forest Science ﹠ Technology (takes place to carry out when serious at wheat aphid, adopt randomized blocks to establish 5 processing, every processing repeats 4 times, totally 20 sub-districts), test effect sees Table 2.Show from result of the test: the concentration effect between each processing of this Synergistic dimethoate emulsifiable concentrate is not obvious, and is suitable with medicament 40% dimethoate emulsifiable concentrate preventive effect, and control wheat head aphid is had higher preventive effect, under the test application dosage crop do not seen the obvious poisoning of generation.Field application quantity agent is every mu just can reach good control efficiency with product volume 67-100ml.
Test 3: toxicological experiment
To carry out toxicological experiment by Huaxi Medical Univ sanitary toxicology research department by the foregoing description two prepared 12% Synergistic dimethoate emulsifiable concentrates.Its experimental technique: rat acute per os toxicity test; The rat acute percutaneous toxicity test; Rabbit skin irritation test; Rabbit skin irritation test.Result of the test sees Table 3, table 4, table 5, table 6.Show from result of the test: this Synergistic dimethoate emulsifiable concentrate is female to SD to be respectively with acute oral LD50 and 95% credibility interval male rat: 2330 (1600-3390) mg/kg all belongs to lower toxicity; Acute through skin LD50＞2000mg/kg to the SD male rat belongs to lower toxicity; Stoste is to rabbit skin nonirritant; Stoste has only mild to moderate excitant to the rabbit eye mucosa.
12% Synergistic dimethoate emulsifiable concentrate control wheat aphid effect
Table 1 Sichuan double fluid in May, 1999
| Handle | 1 day preventive effect difference behind the medicine | 3 days preventive effect difference behind the medicine | 7 days preventive effect difference behind the medicine |
| 300 times of 12% Synergistic dimethoates (167ml) | 98.0 a A | 99.4 a A | 98.9 a A |
| 500 times of 12% Synergistic dimethoates (100ml) | 97.2 a A | 99.0 a A | 98.0 a A |
| 750 times of 12% Synergistic dimethoates (67ml) | 92.1 b B | 95.4 b B | 94.2 b B |
| 667 times of 40% dimethoate emulsifiable concentrates (75ml) | 98.3 a A | 99.6 a A | 99.3 a A |
| CK | —— | —— | —— |
12% Synergistic dimethoate emulsifiable concentrate is to SD rat acute per os toxicity
Table 3
| Animal | Dosage mg/kg | Number of animals (only) | Death toll (only) | LD 50Reach 95% fiducial limit interval, mg/kg |
| Female | 1000 2150 4640 10000 | 5 5 5 5 | 0 2 5 5 | 2330 (1600-3390) |
| Female | 1000 2150 4640 10000 | 5 5 5 5 | 0 1 5 5 | 2710 (2000-3690) |
12% Synergistic dimethoate emulsifiable concentrate is to SD rat acute percutaneous toxicity
Table 4
| Animal | Dosage mg/kg | Number of animals (only) | Death toll (only) | LD 50mg/kg |
| Female | 2000 | 20 | 0 | ＞2000 |
12% Synergistic dimethoate emulsifiable concentrate control wheat aphid test of pesticide effectiveness result (in May, 2000)
Table 2
| Handle title | Repeat | Insect population number (head) before the medicine | 1d after the dispenser | 3d after the dispenser | 7d after the dispenser | 14d after the dispenser | ||||||||||||
| Borer population (head) alive | The rate that goes down (%) | Proofread and correct preventive effect (%) | Average preventive effect (%) | Borer population (head) alive | The rate that goes down (%) | Proofread and correct preventive effect (%) | Average preventive effect (%) | Borer population (head) alive | The rate that goes down (%) | Proofread and correct preventive effect (%) | Average preventive effect (%) | Borer population (head) alive | The rate that goes down (%) | Proofread and correct preventive effect (%) | Average preventive effect (%) | |||
| 12% Synergistic dimethoate emulsifiable concentrate 167ml/ mu | 1 | 365 | 11 | 97.00 | 96.49 | 96.68 | 9 | 97.53 | 97.21 | 98.77 | 1 | 99.73 | 99.74 | 99.94 | 4 | 98.90 | 99.39 | 99.37 |
| 2 | 336 | 14 | 95.83 | 96.99 | 3 | 99.11 | 99.35 | 0 | 100 | 100 | 8 | 97.62 | 98.41 | |||||
| 3 | 222 | 8 | 96.40 | 96.26 | 3 | 98.65 | 99.13 | 0 | 100 | 100 | 6 | 98.65 | 99.67 | |||||
| 4 | 361 | 18 | 95.01 | 96.99 | 4 | 98.89 | 99.39 | 0 | 100 | 100 | 0 | 100 | 100 | |||||
| 12% Synergistic dimethoate emulsifiable concentrate 100ml/ mu | 1 | 783 | 20 | 97.40 | 96.96 | 97.31 | 5 | 99.36 | 99.28 | 99.56 | 20 | 97.40 | 97.49 | 99.17 | 11 | 98.60 | 99.22 | 99.20 |
| 2 | 441 | 11 | 93.83 | 95.56 | 2 | 99.55 | 99.67 | 8 | 98.64 | 99.18 | 13 | 97.05 | 98.03 | |||||
| 3 | 387 | 10 | 97.42 | 97.32 | 2 | 99.48 | 99.66 | 0 | 100 | 100 | 5 | 98.71 | 99.69 | |||||
| 4 | 305 | 3 | 99.02 | 99.41 | 2 | 99.34 | 99.64 | 0 | 100 | 100 | 6 | 98.03 | 99.85 | |||||
| 12% Synergistic dimethoate emulsifiable concentrate 67ml/ mu | 1 | 253 | 8 | 96.84 | 96.30 | 98.50 | 0 | 100 | 100 | 99.67 | 4 | 98.42 | 98.47 | 99.03 | 37 | 85.38 | 91.90 | 97.45 |
| 2 | 145 | 1 | 99.31 | 99.50 | 2 | 98.62 | 98.99 | 4 | 97.24 | 98.34 | 3 | 97.93 | 98.62 | |||||
| 3 | 355 | 5 | 98.59 | 98.53 | 0 | 100 | 100 | 1 | 99.72 | 99.92 | 5 | 98.59 | 99.66 | |||||
| 4 | 171 | 1 | 99.42 | 99.65 | 1 | 99.42 | 99.68 | 0 | 100 | 100 | 7 | 95.91 | 99.70 | |||||
| 40% Synergistic dimethoate emulsifiable concentrate 60ml/ mu | 1 | 781 | 26 | 96.67 | 96.10 | 96.73 | 1 | 99.87 | 99.85 | 99.63 | 1 | 99.87 | 99.87 | 99.17 | 9 | 98.85 | 99.36 | 98.36 |
| 2 | 210 | 6 | 97.14 | 97.94 | 3 | 98.57 | 98.95 | 11 | 94.76 | 96.85 | 18 | 91.43 | 94.28 | |||||
| 3 | 261 | 12 | 95.40 | 95.22 | 0 | 100 | 100 | 0 | 100 | 100 | 0 | 100 | 100 | |||||
| 4 | 1029 | 40 | 96.11 | 97.66 | 5 | 99.51 | 99.73 | 1 | 99.90 | 99.95 | 27 | 97.38 | 99.81 | |||||
| CK | 1 | 493 | 421 | 14.60 | 437 | 11.36 | 510 | -3.45 | 890 | -80.53 | ||||||||
| 2 | 349 | 484 | -38.68 | 475 | -36.10 | 581 | -66.48 | 523 | -49.86 | |||||||||
| 3 | 290 | 279 | 3.79 | 450 | -55.17 | 959 | -230.69 | 1196 | -312.41 | |||||||||
| 4 | 94 | 156 | -65.96 | 172 | -82.98 | 194 | -106.38 | 1275 | -1256.38 | |||||||||
0.5ml12% Synergistic dimethoate emulsifiable concentrate stoste is to rabbit skin irritant test result
Table 5
| Number of animals | Sex | Body weight (kg) | 4 hours | 24 hours | 48 hours | |||||||||
| Sample | Contrast | Sample | Contrast | Sample | Contrast | |||||||||
| Erythema | Oedema | Erythema | Oedema | Erythema | Oedema | Erythema | Oedema | Erythema | Oedema | Erythema | Oedema | |||
| 1 | Male | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | Male | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 3 | Male | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 4 | Female | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Integral mean value | 0 | 0 | 0 | |||||||||||
| Stimulus intensity | Nonirritant | Nonirritant | Nonirritant | |||||||||||
0.1ml12% Synergistic dimethoate emulsifiable concentrate stoste is to rabbit eye irritant test result
Table 6
| Number of animals | The position | Eye irritant reaction integration | I.A.O.I | M.I.O.I | Stimulus intensity | ||||||||||||||
| 1 hour | 24 hours | 48 hours | 72 hours | The 4th day | The 7th day | ||||||||||||||
| Sample | Right | Sample | Right | Sample | Right | Sample | Right | Sample | Right | Sample | Right | Sample | Right | Sample | Right | Sample | Right | ||
| 1 | Conjunctiva iris cornea integration | 7 0 0 7 | 0 0 0 0 | 10 0 0 10 | 0 0 0 0 | 10 7.5 0 17.5 | 0 0 0 0 | 6 5 0 11 | 0 0 0 0 | 8 5 0 13 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 17.5 | 0 | 4 days is 13 | 0 | Mild to moderate excitant | Nonirritant |
| 2 | Conjunctiva iris cornea integration | 7 0 0 7 | 0 0 0 0 | 4 0 0 4 | 0 0 0 0 | 2 0 0 2 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 7 | 0 | 4 days is 0 | 0 | Slight excitant | Nonirritant |
| 3 | Conjunctiva iris cornea integration | 7 0 0 7 | 0 0 0 0 | 5 0 0 5 | 0 0 0 0 | 2 0 0 2 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 7 | 0 | 4 days is 0 | 0 | Slight excitant | Nonirritant |
| 4 | Conjunctiva iris cornea integration | 6 0 0 6 | 0 0 0 0 | 8 0 0 8 | 0 0 0 0 | 6 2.5 0 8.5 | 0 0 0 0 | 2 0 0 2 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 8.5 | 0 | 4 days is 0 | 0 | Slight excitant | Nonirritant |
| Total mark | 27 | 0 | 27 | 0 | 30 | 0 | 13 | 0 | 13 | 0 | 0 | 0 | 40 | 0 | 13 | 0 | |||
| Average stimulation index | 6.75 | 0 | 6.75 | 0 | 7.5 | 0 | 3.25 | 0 | 3.25 | 0 | 0 | 0 | 10 | 0 | 4 days is 3.25 | 0 | Mild to moderate excitant | ||
Claims (5)
1. Synergistic dimethoate emulsifiable concentrate, raw material is made up of Rogor, emulsified solvent and adjuvant, raw material mixed in mixing kettle make product through emulsifying process, it is characterized in that: Rogor is dimethoate emulsifiable concentrate, emulsified solvent is alcohols or aldehyde material, adjuvant is a synergy phosphorus, and each raw material is % meter proportioning by weight:
40% dimethoate emulsifiable concentrate 20-50%,
Alcohols or aldehydes solvent 40-78%,
Synergy phosphorus 1-20%.
2. Synergistic dimethoate emulsifiable concentrate according to claim 1 is characterized in that: each raw material is % meter proportioning by weight:
40% dimethoate emulsifiable concentrate 30%
Alcohols or aldehydes solvent 55-65%,
Synergy phosphorus 5-15%,
The product that described raw material proportioning makes is 12% Synergistic dimethoate emulsifiable concentrate.
3. Synergistic dimethoate emulsifiable concentrate according to claim 1 is characterized in that: alcohols material is wherein a kind of of methyl alcohol, ethanol, ethylene glycol.
4. according to claim 1 or 3 described Synergistic dimethoate emulsifiable concentrates, it is characterized in that: raw material is % meter proportioning by weight: 40% dimethoate emulsifiable concentrate 30%, methyl alcohol or ethanol 65%, synergy phosphorus 5%.
5. Synergistic dimethoate emulsifiable concentrate according to claim 1 is characterized in that: aldehyde material is wherein a kind of of formaldehyde, propionic aldehyde, hutanal, glyoxal.
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| CN 00120622 CN1119078C (en) | 2000-12-25 | 2000-12-25 | Synergistic dimethoate emulsifiable concentrate |
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| CN 00120622 CN1119078C (en) | 2000-12-25 | 2000-12-25 | Synergistic dimethoate emulsifiable concentrate |
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